Temporal profiles reshaping and power limiting characteristics of nanosecond laser pulses in four-Brillouin media

Yuelan Lu; Zhiwei Lu; Jun Yang

doi:10.1117/12.572663

31 January 2005 Temporal profiles reshaping and power limiting characteristics of nanosecond laser pulses in four-Brillouin media

Yuelan Lu, Zhiwei Lu, Jun Yang

Author Affiliations +

Proceedings Volume 5624, Semiconductor and Organic Optoelectronic Materials and Devices; (2005) https://doi.org/10.1117/12.572663
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

Theoretical simulations and experimental studies of power limiting effect in four Brillouin media have been given in this paper. One-dimensional coupling equations are used to stimulate the propagation of nonlinear laser pulse in four SBS media. The transmitted temporal pulse profiles through SBS medium with various pump energies are numerically simulated, then temporal pulse reshaping, power limiting dependent on SBS Gain of medium in four SBS media are investigated theoretically. By using Nd:YAG laser pulses with 20ns pulse duration and four Brillouin media such as CCl4, Fc-72, CS2 and acetone, Temporal profiles reshaping and power limiting characteristics are given experimentally. Those SBS limiting effects have characteristics as follows: CCl4, Fc-72 give higher limited power, CS2 and acetone give lower limited power. The control rule of power limiting dependent on Gain of medium is exhibited in theoretical calculations and experiments as follows: Smaller gain of medium system will give higher limited power, at mean time; higher gain of medium will give lower limited power. The above study makes SBS suitable to be applied in the protection and stabilization of high-power laser system.

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Yuelan Lu, Zhiwei Lu, and Jun Yang "Temporal profiles reshaping and power limiting characteristics of nanosecond laser pulses in four-Brillouin media", Proc. SPIE 5624, Semiconductor and Organic Optoelectronic Materials and Devices, (31 January 2005); https://doi.org/10.1117/12.572663

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KEYWORDS

Scattering

Optical limiting

High power lasers

Laser scattering

Nonlinear optics

Solids

Nd:YAG lasers

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