热效应非线性光学限幅器

Nonlinear Optical Limiter Based on Thermal Effect

利用光学限幅器限制光强度是在强光下保护光学器件的有效方法．本文在连续光入射情况下，研究了基于材料中线性吸收产生热效应的光学限幅器，并讨论了非线性吸收对热效应光限幅的影响，从理论上分析了这类光限幅器的光学性质，为实际应用提供了依据．

It is an effective way to protect optical devices from intense radiation by optical limiter. The limitersbased on thermal effect induced by linear absorption in materials have been studied under the condition of cwlaser. The influences of nonlinear absorption on limiter are discussed. The theoretical analysis of optical characteristics in these limiters can make,grounds for practice use.