31 January 2005 Temporal profiles reshaping and power limiting characteristics of nanosecond laser pulses in four-Brillouin media
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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, Yuelan Lu, Zhiwei Lu, Zhiwei Lu, Jun Yang, 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); doi: 10.1117/12.572663; https://doi.org/10.1117/12.572663
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