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Spontaneous Emission and Laser Oscillation in M...
41,62 € *
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In spite of the increasing importance of microcavities, device physics or the observable phenomena in optical microcavities such as enhanced or inhibited spontaneous emission and its relation with the laser oscillation has not been systematically well-described-until now. Spontaneous Emission and Laser Oscillation in Microcavities presents the basics of optical microcavities. The volume is divided into ten chapters, each written by respected authorities in their areas. The book surveys several methods describing free space spontaneous emission and discusses changes in the feature due to the presence of a cavity. The effect of dephasing of vacuum fields on spontaneous emission in a microcavity and the effects of atomic broadening on spontaneous emission in an optical microcavity are examined. The book details the splitting in transmission peaks of planar microcavities containing semiconductor quantum wells. A simple but useful way to consider the change in the spontaneous emission rate from the viewpoint of mode density alteration by wavelength-sized cavities is provided. Authors also discuss the spontaneous emission in dielectric planar microcavities. Spontaneous emission in microcavity surface emitting lasers is covered, as are the effects of electron confinement in semiconductor quantum wells, wires, and boxes also given. The volume extends the controlling spontaneous emission phenomenon to laser oscillation. Starting from the Fermi golden rule, the microcavity laser rate equations are derived, and the oscillation characteristics are analyzed. Recent progress in optical microcavity experiments is summarized, and the applicability in massively optical parallel processing systems and demands for the device performance are explored. This volume is extremely useful as a textbook for graduate and postgraduate students and works well as a unique reference for researchers beginning to study in the field.

Anbieter: buecher
Stand: 16.07.2020
Zum Angebot
Spontaneous Emission and Laser Oscillation in M...
41,62 € *
ggf. zzgl. Versand

In spite of the increasing importance of microcavities, device physics or the observable phenomena in optical microcavities such as enhanced or inhibited spontaneous emission and its relation with the laser oscillation has not been systematically well-described-until now. Spontaneous Emission and Laser Oscillation in Microcavities presents the basics of optical microcavities. The volume is divided into ten chapters, each written by respected authorities in their areas. The book surveys several methods describing free space spontaneous emission and discusses changes in the feature due to the presence of a cavity. The effect of dephasing of vacuum fields on spontaneous emission in a microcavity and the effects of atomic broadening on spontaneous emission in an optical microcavity are examined. The book details the splitting in transmission peaks of planar microcavities containing semiconductor quantum wells. A simple but useful way to consider the change in the spontaneous emission rate from the viewpoint of mode density alteration by wavelength-sized cavities is provided. Authors also discuss the spontaneous emission in dielectric planar microcavities. Spontaneous emission in microcavity surface emitting lasers is covered, as are the effects of electron confinement in semiconductor quantum wells, wires, and boxes also given. The volume extends the controlling spontaneous emission phenomenon to laser oscillation. Starting from the Fermi golden rule, the microcavity laser rate equations are derived, and the oscillation characteristics are analyzed. Recent progress in optical microcavity experiments is summarized, and the applicability in massively optical parallel processing systems and demands for the device performance are explored. This volume is extremely useful as a textbook for graduate and postgraduate students and works well as a unique reference for researchers beginning to study in the field.

Anbieter: buecher
Stand: 16.07.2020
Zum Angebot
Spontaneous Emission and Laser Oscillation in M...
41,62 € *
ggf. zzgl. Versand

In spite of the increasing importance of microcavities, device physics or the observable phenomena in optical microcavities such as enhanced or inhibited spontaneous emission and its relation with the laser oscillation has not been systematically well-described-until now. Spontaneous Emission and Laser Oscillation in Microcavities presents the basics of optical microcavities. The volume is divided into ten chapters, each written by respected authorities in their areas. The book surveys several methods describing free space spontaneous emission and discusses changes in the feature due to the presence of a cavity. The effect of dephasing of vacuum fields on spontaneous emission in a microcavity and the effects of atomic broadening on spontaneous emission in an optical microcavity are examined. The book details the splitting in transmission peaks of planar microcavities containing semiconductor quantum wells. A simple but useful way to consider the change in the spontaneous emission rate from the viewpoint of mode density alteration by wavelength-sized cavities is provided. Authors also discuss the spontaneous emission in dielectric planar microcavities. Spontaneous emission in microcavity surface emitting lasers is covered, as are the effects of electron confinement in semiconductor quantum wells, wires, and boxes also given. The volume extends the controlling spontaneous emission phenomenon to laser oscillation. Starting from the Fermi golden rule, the microcavity laser rate equations are derived, and the oscillation characteristics are analyzed. Recent progress in optical microcavity experiments is summarized, and the applicability in massively optical parallel processing systems and demands for the device performance are explored. This volume is extremely useful as a textbook for graduate and postgraduate students and works well as a unique reference for researchers beginning to study in the field.

Anbieter: buecher
Stand: 16.07.2020
Zum Angebot
Awei X650BL Magnet Attraction Bluetooth 4.1 Spo...
30,87 € *
ggf. zzgl. Versand

Brief Introduction: The Awei X650BL cool running Bluetooth headset uses dual 6mm copper ring coils, strong rubidium boron magnets and high-class carbon fiber diaphragms. Deep low frequency, solid medium frequency, more abundant high-frequency details. Beautiful voice and music silkily fall in ears and keep in memories.With its IPX5 waterproof performance, you are able to enjoy sports with a passion, no fear of sweat and rain!Main Features: - Dual Dynamic DriversBring your music to life with premium sound at an incredible value. You simply won't get sound this amazing from generic earbuds. You have to hear it and believe it- Magic Magnet Attraction Technology Absorbs or separates gently to turn the earphones on/off, abandons traditional button, novel and simpleIts magnetic attraction design function can connect 2 earphones easily. Hanging on the neck like a necklace when not in use could avoid loss meanwhile it could be a cool amazing accessory for fashion users- Fast Connection With Bluetooth V4.1 technology is faster than other devices, the transmission distance is up to 10m. Enjoy perfect compatibility for Windows devices, iOS, Android smartphones and tablets, and all popular Bluetooth devices- Intelligent Connection Connects two phones simultaneously, under pairing one phone status to link to another phone - On-ear ControlIntuitive, easy access controls for freely switching songs, pause/play, and the built-in mic for effortless call handling. Helping to avoid removing earbuds from the ear or dealing with tangled wires- Long Battery Life Efficient and low power consumption chips bring longer battery life. Built-in 1 x 100mAh Li-ion battery, 4.5 - 7 hours music time, 5 hours talk time, 1.5 hours charging time and up to 200 hours standby time- IPX5 Waterproof No worries about dripping sweat. Ergonomic design allows for ultimate wearing comfort to match your active lifestyle like running, jogging, cycling, driving, camping, hiking, gym exercise and other outdoor sportsSpecifications: - Bluetooth: V4.1- Bluetooth protocol: A2DP, AVRCP, HSP, HFP, SBC- Driver unit: 6mm dual dynamic drivers - Sensitivity: 92dB- Impedance: 16 ohm- Voice frequency range: 20Hz - 20KHz- Transmission distance: 10m- Power supply: 1 x 100mAh Li-ion battery (built-in)- Charging voltage: DC 5V- Charging time: 1.5 hours- Music time: 4.5 - 7 hours- Talk time: 5 hours- Standby time: 200 hoursFAQ 1. Q: what should I do if my headset can't pair my phone?A: please make sure this headset has been going into pairing mode (turn the Bluetooth on and press the play key until the LED light flashing). 2. Q: what should I do if my Bluetooth headset is not showing up on my cell phone?A: check both devices, and make sure that Bluetooth is turned on. If the problem persists, check to see if they are compatible.3. Q: what can I do when the headset says the pair list is full?A: go to the pairing list and try to delete one or more from the paired devices on your phone. 0.195 Package weight: 0.229 kg Package Size(L x W x H): 14.00 x 4.00 x 14.00 cm / 5.51 x 1.57 x 5.51 inches Package Contents: 1 x Headphone, 1 x USB Cable, 2 x Pair of Ear Tips, 1 x Wire Clip, 1 x Clamp, 1 x English and Chinese User Manual IPXX Rating ChartIP Code The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating*) consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof.The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. For example, an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.

Anbieter: G2A
Stand: 16.07.2020
Zum Angebot
Awei X650BL Magnet Attraction Bluetooth 4.1 Spo...
31,62 € *
ggf. zzgl. Versand

Brief Introduction: The Awei X650BL cool running Bluetooth headset uses dual 6mm copper ring coils, strong rubidium boron magnets and high-class carbon fiber diaphragms. Deep low frequency, solid medium frequency, more abundant high-frequency details. Beautiful voice and music silkily fall in ears and keep in memories.With its IPX5 waterproof performance, you are able to enjoy sports with a passion, no fear of sweat and rain!Main Features: - Dual Dynamic DriversBring your music to life with premium sound at an incredible value. You simply won't get sound this amazing from generic earbuds. You have to hear it and believe it- Magic Magnet Attraction Technology Absorbs or separates gently to turn the earphones on/off, abandons traditional button, novel and simpleIts magnetic attraction design function can connect 2 earphones easily. Hanging on the neck like a necklace when not in use could avoid loss meanwhile it could be a cool amazing accessory for fashion users- Fast Connection With Bluetooth V4.1 technology is faster than other devices, the transmission distance is up to 10m. Enjoy perfect compatibility for Windows devices, iOS, Android smartphones and tablets, and all popular Bluetooth devices- Intelligent Connection Connects two phones simultaneously, under pairing one phone status to link to another phone - On-ear ControlIntuitive, easy access controls for freely switching songs, pause/play, and the built-in mic for effortless call handling. Helping to avoid removing earbuds from the ear or dealing with tangled wires- Long Battery Life Efficient and low power consumption chips bring longer battery life. Built-in 1 x 100mAh Li-ion battery, 4.5 - 7 hours music time, 5 hours talk time, 1.5 hours charging time and up to 200 hours standby time- IPX5 Waterproof No worries about dripping sweat. Ergonomic design allows for ultimate wearing comfort to match your active lifestyle like running, jogging, cycling, driving, camping, hiking, gym exercise and other outdoor sportsSpecifications: - Bluetooth: V4.1- Bluetooth protocol: A2DP, AVRCP, HSP, HFP, SBC- Driver unit: 6mm dual dynamic drivers - Sensitivity: 92dB- Impedance: 16 ohm- Voice frequency range: 20Hz - 20KHz- Transmission distance: 10m- Power supply: 1 x 100mAh Li-ion battery (built-in)- Charging voltage: DC 5V- Charging time: 1.5 hours- Music time: 4.5 - 7 hours- Talk time: 5 hours- Standby time: 200 hoursFAQ 1. Q: what should I do if my headset can't pair my phone?A: please make sure this headset has been going into pairing mode (turn the Bluetooth on and press the play key until the LED light flashing). 2. Q: what should I do if my Bluetooth headset is not showing up on my cell phone?A: check both devices, and make sure that Bluetooth is turned on. If the problem persists, check to see if they are compatible.3. Q: what can I do when the headset says the pair list is full?A: go to the pairing list and try to delete one or more from the paired devices on your phone. 0.195 Package weight: 0.229 kg Package Size(L x W x H): 14.00 x 4.00 x 14.00 cm / 5.51 x 1.57 x 5.51 inches Package Contents: 1 x Headphone, 1 x USB Cable, 2 x Pair of Ear Tips, 1 x Wire Clip, 1 x Clamp, 1 x English and Chinese User Manual IPXX Rating ChartIP Code The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating*) consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof.The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. For example, an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.

Anbieter: G2A
Stand: 16.07.2020
Zum Angebot
Awei AK7 Waterproof Magic Magnet Attraction Blu...
21,89 € *
ggf. zzgl. Versand

Keep Going with Awei AK7: The Awei AK7 cool running Bluetooth headset uses 6mm copper ring coils, strong rubidium boron magnets and high class carbon fiber diaphragms. Deep low frequency, solid medium frequency, more abundant high frequency details. Beautiful voice and music silkily fall in ears and keep in memories.With its IPX4 waterproof performance, you are able to enjoy sports with passion, no fear of sweat and rain!Main Features: - Comfortable to Wear Ergonomic ear hook design with silica gel, lightweight and flexible for durability and portability. You won't get discomfort even after hours of use, perfect for jogging, running, hiking, etc. And multiple ear caps ensure the best possible fit for any set of ears - Magic Magnet Attraction Technology Gently absorb or separate to turn the earphones on / off, abandon traditional button, novel and simpleIts magnetic attraction design function can connect 2 earphones easily. Hanging on neck like a necklace when not in use could avoid loss meanwhile it could be a cool amazing accessory for fashion users- Fast Connection With Bluetooth 4.1 technology is faster than other devices, the transmission distance is up to 10m. Enjoy perfect compatibility with iPhone, iPad, Android smartphones and tablets, windows devices, and all popular Bluetooth devices- Intelligent Connection Connect two phones simultaneously, under pairing one phone status to link to another phone- On-ear ControlIntuitive, easy access controls for freely switching songs, pause / play, and the built-in mic for effortless call handling. Helping avoid removing earbuds from ear or dealing with tangles wires- Long Battery Life Efficient and low power consumption chips bring longer battery life. Built-in 2 x 65mAh li-ion battery, 10h music time, 12h talking time, 2h charging time and up to 240h standby timeSpecifications: - Material: metal + TPE- Bluetooth: 4.1- Bluetooth protocol: A2DP, AVRCP, HSP, HFP- Driver unit: 6mm- Sensitivity: 92dB- Impedance: 16 ohm- Wireless frequency range: 2.402GHz - 2.480GHz- Voice frequency range: 20Hz - 20KHz- Line length: 60cm- Transmission distance: 10m- Waterproof: IPX4- Power supply: 2 x 65mAh rechargeable li-ion battery ( built-in )- Charging time: 2 hours- Talking time: 12 hours- Music playing time: 10 hours- Stand-by time: up to 240 hours- Charging port: Micro USBFAQ 1. Q: what should I do if my headset can't pair my phone?A: please make sure this headset has been going into pairing mode ( turn the Bluetooth on and press the play key until the LED light flashing ). 2. Q: what should I do if my Bluetooth headset is not showing up on my cell phone?A: check both devices, and make sure that Bluetooth is turned on. If the problem persists, check to see if they are compatible.3. Q: what can I do when the headset says the pair list is full?A: go to the pairing list and try to delete one or more from the paired devices on your phone. 0.216 Package weight: 0.251 kg Package Size(L x W x H): 20.50 x 10.50 x 4.50 cm / 8.07 x 4.13 x 1.77 inches Package Contents: 1 x Headset, 1 x USB Cable, 2 x Pair of Ear Tips, 1 x Pair of Ear Hooks, 1 x Wire Clip, 1 x Wire Clamp, 1 x Storage Box, 1 x Multilingual User Manual IPXX Rating ChartIP Code The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating*) consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof.The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. For example, an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.

Anbieter: G2A
Stand: 16.07.2020
Zum Angebot
Awei AK7 Waterproof Magic Magnet Attraction Blu...
21,48 € *
ggf. zzgl. Versand

Keep Going with Awei AK7: The Awei AK7 cool running Bluetooth headset uses 6mm copper ring coils, strong rubidium boron magnets and high class carbon fiber diaphragms. Deep low frequency, solid medium frequency, more abundant high frequency details. Beautiful voice and music silkily fall in ears and keep in memories.With its IPX4 waterproof performance, you are able to enjoy sports with passion, no fear of sweat and rain!Main Features: - Comfortable to Wear Ergonomic ear hook design with silica gel, lightweight and flexible for durability and portability. You won't get discomfort even after hours of use, perfect for jogging, running, hiking, etc. And multiple ear caps ensure the best possible fit for any set of ears - Magic Magnet Attraction Technology Gently absorb or separate to turn the earphones on / off, abandon traditional button, novel and simpleIts magnetic attraction design function can connect 2 earphones easily. Hanging on neck like a necklace when not in use could avoid loss meanwhile it could be a cool amazing accessory for fashion users- Fast Connection With Bluetooth 4.1 technology is faster than other devices, the transmission distance is up to 10m. Enjoy perfect compatibility with iPhone, iPad, Android smartphones and tablets, windows devices, and all popular Bluetooth devices- Intelligent Connection Connect two phones simultaneously, under pairing one phone status to link to another phone- On-ear ControlIntuitive, easy access controls for freely switching songs, pause / play, and the built-in mic for effortless call handling. Helping avoid removing earbuds from ear or dealing with tangles wires- Long Battery Life Efficient and low power consumption chips bring longer battery life. Built-in 2 x 65mAh li-ion battery, 10h music time, 12h talking time, 2h charging time and up to 240h standby timeSpecifications: - Material: metal + TPE- Bluetooth: 4.1- Bluetooth protocol: A2DP, AVRCP, HSP, HFP- Driver unit: 6mm- Sensitivity: 92dB- Impedance: 16 ohm- Wireless frequency range: 2.402GHz - 2.480GHz- Voice frequency range: 20Hz - 20KHz- Line length: 60cm- Transmission distance: 10m- Waterproof: IPX4- Power supply: 2 x 65mAh rechargeable li-ion battery ( built-in )- Charging time: 2 hours- Talking time: 12 hours- Music playing time: 10 hours- Stand-by time: up to 240 hours- Charging port: Micro USBFAQ 1. Q: what should I do if my headset can't pair my phone?A: please make sure this headset has been going into pairing mode ( turn the Bluetooth on and press the play key until the LED light flashing ). 2. Q: what should I do if my Bluetooth headset is not showing up on my cell phone?A: check both devices, and make sure that Bluetooth is turned on. If the problem persists, check to see if they are compatible.3. Q: what can I do when the headset says the pair list is full?A: go to the pairing list and try to delete one or more from the paired devices on your phone. 0.216 Package weight: 0.251 kg Package Size(L x W x H): 20.50 x 10.50 x 4.50 cm / 8.07 x 4.13 x 1.77 inches Package Contents: 1 x Headset, 1 x USB Cable, 2 x Pair of Ear Tips, 1 x Pair of Ear Hooks, 1 x Wire Clip, 1 x Wire Clamp, 1 x Storage Box, 1 x Multilingual User Manual IPXX Rating ChartIP Code The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating*) consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water in electrical enclosures. The standard aims to provide users more detailed information than vague marketing terms such as waterproof.The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. For example, an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.

Anbieter: G2A
Stand: 16.07.2020
Zum Angebot
Piezoelectric Components Wirelessly Driven by F...
49,00 € *
ggf. zzgl. Versand

In most applications of piezoelectric devices, electric energy is applied to the devices via lead wires soldered on the electrodes of piezoelectric components. At high input voltage, large vibration amplitudes or high temperature, the lead wires may fall off, causing the breakdown of devices. The soldered wire may limit the miniaturization, affect the properties of micro and nano devices and hinder the applications of piezoelectric devices in rotary mechanisms. The fundamental limitations of direct drive of piezoelectric devices via lead wires soldered on the electrodes necessitate the pursuit of wireless energy transmission to piezoelectric components which is the bottleneck for further widespread applications of microsystems. This book provides a new method of wireless drive of piezoelectric components by focused electric field to miniaturize and widen the application range of piezoelectric devices. A needle electrode is used to focus the electric field. The wireless energy transmission to piezoelectric components depends on the operating frequency, electrical load, electric field, electrode pattern, vibration mode and distance of the piezoelectric components.

Anbieter: Dodax
Stand: 16.07.2020
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Electric Bus
54,00 € *
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An electric bus is a bus powered by electricity. There are two main electric bus categories: The trolleybus is a type of electric bus powered by two overhead electric wires, with electricity being drawn from one wire and returned via the other wire, using two roof-mounted trolley poles. The onboard stored-electricity bus: Battery electric bus and capabus, Gyrobus. For information on buses using a combination of internal-combustion engines and electric propulsion, see Hybrid electric buses and Dual-mode buses.

Anbieter: Dodax
Stand: 16.07.2020
Zum Angebot