Nonlinear propagation and optical limiting of Nd:YAG nanosecond laser pulses by stimulated Brillouin scattering

Yuelan Lu; Zhiwei Lu; Jun Yang; Hong Zhao

doi:10.1117/12.502267

17 June 2003 Nonlinear propagation and optical limiting of Nd:YAG nanosecond laser pulses by stimulated Brillouin scattering

Yuelan Lu, Zhiwei Lu, Jun Yang, Hong Zhao

Author Affiliations +

Proceedings Volume 5129, Fundamental Problems of Optoelectronics and Microelectronics; (2003) https://doi.org/10.1117/12.502267
Event: Fundamental Problems of Optoelectronics and Microelectronics, 2002, Vladivostok, Russian Federation

Abstract

In this paper, optical limiting effect based on stimulated Brillouin scattering (SBS) in a nonlinear medium has been demonstrated. First, nonlinear propagation has been numerically analyzed and computationally treated in the transient SBS progress. Optical limiting, stabilization and output pulses have been shown theoretically when high-power laser pulses enter a SBS medium. Experimental investigation of optical limiting performances predicted by theory has been conducted within a nonlinear medium CCl₄. The input optical signa is Nd:YAG nanosecond laser pulse with width 2ns. The limiting characteristics depending on varied physical parameters such as focus, cell length of SBS medium CCl₄ and separation between cell and lens have been investigated. The good pulse shape of envelope of the transmitted pulse train and a superior constant output energy have been obtained when the SBS occurs. The relative fluctuation for transmitted signal is about ± 7% while relative fluctuation for laser pulse is ± 13%.

Citation Download Citation

Yuelan Lu, Zhiwei Lu, Jun Yang, and Hong Zhao "Nonlinear propagation and optical limiting of Nd:YAG nanosecond laser pulses by stimulated Brillouin scattering", Proc. SPIE 5129, Fundamental Problems of Optoelectronics and Microelectronics, (17 June 2003); https://doi.org/10.1117/12.502267

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