Devices for generation and detection of subnanosecond IR and FIR radiation pulses

Eugene V. Beregulin; Sergey D. Ganichev; Ilya D. Yaroshetskii; Peter Lang; Wolfgang Schatz; Karl F. Renk

doi:10.1117/12.24477

1 February 1991 Devices for generation and detection of subnanosecond IR and FIR radiation pulses

Eugene V. Beregulin, Sergey D. Ganichev, Ilya D. Yaroshetskii, Peter Lang, Wolfgang Schatz, Karl F. Renk

Proceedings Volume 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications; (1991) https://doi.org/10.1117/12.24477
Event: Physical Concepts of Materials for Novel Optoelectronic Device Applications, 1990, Aachen, Germany

Abstract

Mechanisms of saturation absorption of IR-FIR radiation in semiconductors with degenerate band structure are investigated. As a result of this investigation a mode-locking device for pulsed IR gas lasers is developed and investigated. Using p-GE filter cooled to 78 K as the saturation absorber inside the laser resonator, subnanosecond IR laser pulses are obtained from a tunable high pressure CO2 laser. These pulses were transferred into FIR region via stimulated Raman scattering of CO2 radiation and as result tunable subnanosecond FIR laser pulses are obtained. The device permits the generation of a train of short pulses lasting 1 ns and accordingly from FIR laser. Semiconductor photoelectric detectors for subnanosecond IR-FIR radiation pulses are also described.

Citation Download Citation

Eugene V. Beregulin, Sergey D. Ganichev, Ilya D. Yaroshetskii, Peter Lang, Wolfgang Schatz, and Karl F. Renk "Devices for generation and detection of subnanosecond IR and FIR radiation pulses", Proc. SPIE 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications, (1 February 1991); https://doi.org/10.1117/12.24477

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