22 June 1999 Laser pulse shortening due to self-excited hf oscillations in optoelectronic negative feedback system
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Proceedings Volume 3516, 23rd International Congress on High-Speed Photography and Photonics; (1999) https://doi.org/10.1117/12.350444
Event: Twenty-Third International Congress on High-Speed Photography and Photonics, 1998, Moscow, Russian Federation
Abstract
Simple improvement of the control system in the laser controlled by fast time-shifted negative feedback allow us to obtain essentially shorter optical pulses in mode-locking regime. Mathematical model was developed, computer simulation was performed. We also have experimentally demonstrated two times pulse shortening as a result of HF electric oscillations self-excitation in the control system. Control system unit with resonant frequency approximately 1 GHz based on high- voltage silicon mesostructure was created. This scheme was applied to Nd-YAG laser. Formation process and stable shape of the control voltage were studied. Fine time structure of the emitted light was investigated by use of the direct streak- camera method, minimum laser pulse duration was 70 plus or minus 15 ps.
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M. V. Gorbunkov, M. V. Gorbunkov, Y. V. Shabalin, Y. V. Shabalin, "Laser pulse shortening due to self-excited hf oscillations in optoelectronic negative feedback system", Proc. SPIE 3516, 23rd International Congress on High-Speed Photography and Photonics, (22 June 1999); doi: 10.1117/12.350444; https://doi.org/10.1117/12.350444
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