Flexible Generation of Picosecond Laser Pulses in the Infrared and Green Spectral Range by Gain-Switching of Semiconductor Lasers PDF Download
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Author: Sina Riecke Publisher: Cuvillier Verlag ISBN: 3736936524 Category : Science Languages : en Pages : 136
Book Description
Picosecond laser pulses find diverse applications for example in material processing as well as in analysis and sensing. Fluorescence lifetime spectroscopy in particular requires pulses with variable repetition rate and moderate pulse energy. While suitable pulses in the red and blue spectral range can be provided by gain-switched laser diodes, the generation of green laser pulses requires a more elaborate setup based on second harmonic generation. The starting point is a gain-switched infrared distributed-feedback laser diode. The optimization of the laser design and the operating conditions allows to generate spectrally narrow picosecond pulses with a peak power above 1 W. Different gain media are compared for further amplification of these pulses, and options for the miniaturization of the master-oscillator power-amplifier system are explored. The resulting intense infrared pulses are then used for second harmonic generation of green picoseconds pulses. Their peak power of above 5 W exceeds all previous green pulse sources with variable repetition rate. In terms of pulse energy and background suppression, the reported green pulses are thus ideally suited for fluorescence lifetime spectroscopy
Author: Sina Riecke Publisher: Cuvillier Verlag ISBN: 3736936524 Category : Science Languages : en Pages : 136
Book Description
Picosecond laser pulses find diverse applications for example in material processing as well as in analysis and sensing. Fluorescence lifetime spectroscopy in particular requires pulses with variable repetition rate and moderate pulse energy. While suitable pulses in the red and blue spectral range can be provided by gain-switched laser diodes, the generation of green laser pulses requires a more elaborate setup based on second harmonic generation. The starting point is a gain-switched infrared distributed-feedback laser diode. The optimization of the laser design and the operating conditions allows to generate spectrally narrow picosecond pulses with a peak power above 1 W. Different gain media are compared for further amplification of these pulses, and options for the miniaturization of the master-oscillator power-amplifier system are explored. The resulting intense infrared pulses are then used for second harmonic generation of green picoseconds pulses. Their peak power of above 5 W exceeds all previous green pulse sources with variable repetition rate. In terms of pulse energy and background suppression, the reported green pulses are thus ideally suited for fluorescence lifetime spectroscopy
Author: Peter Vasilʹev Publisher: Artech House Publishers ISBN: Category : Technology & Engineering Languages : en Pages : 296
Book Description
This timely book combines theory, applications, and projections on ultrafast diode lasers (UDL). A comprehensive treatment of UDLs from basic physical principles to applications in optical fiber communications and ultrafast electronics.
Author: Publisher: ISBN: Category : Languages : pt-BR Pages :
Book Description
Este trabalho apresenta alguns estudos experimentais sobre a geração de pulsos óticos curtos com lasers semicondutores e a deteção desses pulsos. Descreve-se inicialmente a geração de pulsos elétricos curtos com geradores a transistor avalanche e chaves fotocondutivas. Foi desenvolvido um modelo de circuito equivalente para lasers multi-modos, que permite simular com precisão a resposta ótica do dispositivo para diferentes condições de alimentação. Foram também desenvolvidos transformadores de impedância de larga banda passante. Linhas de transmissão de diversos tipos e substratos de diferentes constantes dielétricas foram empregados. Comprovou-se experimentalmente a melhoria da resposta ótica do laser a pulsos curtos de corrente com o uso desses transformadores, comparada com os arranjos convencionais. Mostrou-se também experimentalmente que os transformadores aqui desenvolvidos proporcionam um aumento significativo na largura de banda de sistemas de fotodetetores rápidos. São apresentados resultados experimentais de geração de pulsos óticos curtos com lasers semicondutores, usando-se as técnicas de mode-locking e chaveamento de ganho. Finalmente são sugeridas algumas técnicas alternativas para a medição indireta dos pulsos gerados pelo processo de mode-locking, e são mostrados alguns resultados preliminares.
Author: Sina Riecke
Author: Sina Riecke
Author: J. P. Curtis
Author: Per Andersson
Author: Per Andersson
Author: Stefan Lundqvist
Author: Per Andersson
Author: G. J. Aspin
Author: Peter Vasilʹev
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