Quasi CW mode, regular and chaotic dynamics in picosecond Nd:YAG laser with millisecond pumping under optoelectronic feedback control

M. V. Gorbunkov; Yu. Ya. Maslova; V. A. Petukhov; M. A. Semenov; Yu. V. Shabalin; A. V. Vinogradov

doi:10.1117/12.752956

9 August 2007 Quasi CW mode, regular and chaotic dynamics in picosecond Nd:YAG laser with millisecond pumping under optoelectronic feedback control

M. V. Gorbunkov, Yu. Ya. Maslova, V. A. Petukhov, M. A. Semenov, Yu. V. Shabalin, A. V. Vinogradov

Author Affiliations +

Proceedings Volume 6731, International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems; 67311Z (2007) https://doi.org/10.1117/12.752956
Event: International Conference on Lasers, Applications, and Technologies '07, 2007, Minsk, Belarus

Abstract

We propose and study both numerically and experimentally a laser system controlled by the combination of positive and negative feedbacks capable to generate a long picosecond pulse train of stable amplitude as well as regular pulsation with sub-microsecond period. The proper combination of feedbacks is realized in a Nd:YAG laser with millisecond pumping by means of a single optoelectronic negative feedback which utilizes signal reflected from an intracavity Pockels cell polarizer. Regular pulsation (microgroups of picosecond pulses) with controlled period from 25 to 75 resonator round trips is obtained. The development of chaotic dynamics displayed by the system at higher pumping level differs from the Feigenbaum scenario. The regular pulsation regime has a great potential in a laser-electron X-ray generator design and other applications.

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M. V. Gorbunkov, Yu. Ya. Maslova, V. A. Petukhov, M. A. Semenov, Yu. V. Shabalin, and A. V. Vinogradov "Quasi CW mode, regular and chaotic dynamics in picosecond Nd:YAG laser with millisecond pumping under optoelectronic feedback control", Proc. SPIE 6731, International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems, 67311Z (9 August 2007); https://doi.org/10.1117/12.752956

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KEYWORDS

Picosecond phenomena

Polarizers

Optoelectronics

Control systems

Negative feedback

Feedback control

Nd:YAG lasers

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