High diffraction efficiency for ultra-short laser pulse by superposed reflection volume phase gratings

Guangwei Zheng; Jichun Tan

doi:10.1117/12.839586

25 November 2009 High diffraction efficiency for ultra-short laser pulse by superposed reflection volume phase gratings

Guangwei Zheng, Jichun Tan

Proceedings Volume 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 75061J (2009) https://doi.org/10.1117/12.839586
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

An innovative configuration - two pieces of reflection volume phase gratings superposed is put forward, in order to highly diffract the ultra-short laser pulse. Based on Kogelnik's coupled wave theory, and discrete Fourier transform, the diffraction efficiency of the configuration for ultra-short laser pulse is formulated. And the diffraction efficiency for laser pulse with a Gaussian shape in temporal domain is simulated. The results show that when the two gratings' vectors are parallel to each other, and their parameters are selected appropriately, the diffraction spectrum of the configuration is approximately composed of those of the two gratings. The diffraction efficiency of 70fs Gaussian laser pulse can be improved to 0.96, which is 0.20 larger than that by only one piece of the grating. It is very useful for the application of ultra-short laser pulse, such as beam deflector with high diffraction efficiency, spectral beam combination, and so on.

Citation Download Citation

Guangwei Zheng and Jichun Tan "High diffraction efficiency for ultra-short laser pulse by superposed reflection volume phase gratings", Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 75061J (25 November 2009); https://doi.org/10.1117/12.839586

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