Miniature pulse compressor of deep-etched gratings
Data(s) |
2008
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Resumo |
We propose a miniature pulse compressor that can be used to compensate the group velocity dispersion that is produced by a commercial femtosecond laser cavity. The compressor is composed of two identical highly efficient deep-etched transmissive gratings. Compared with prism pairs, highly efficient deep-etched transmissive grating pairs are lightweight and small. With an optimized groove depth and a duty cycle, 98% diffraction efficiency of the -1 transmissive order can be achieved at a wavelength of 800 nm under Littrow conditions. The deep-etched gratings are fabricated in fused silica by inductively coupled plasma etching. With a pair of the fabricated gratings, the input positively chirped 73.9 fs pulses are neatly compressed into the nearly Fourier transform-limited 43.2 fs pulses. The miniature deep-etched grating-based pulse compressor should be of interest for practical applications. (c) 2008 Optical Society of America National Natural Science Foundation of China [60878035]; Shanghai Science and Technology Committee [07SA14]; 973 program [2006CB806000] |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Jia Wei;周常河;Feng Jijun;戴恩文 .,Appl. Optics,2008,47(32):6058-6063 |
Palavras-Chave | #Duty cycles #Etched gratings #Femto-second lasers #Fs pulse #Groove depths #Group velocities #Inductively coupled plasma etchings #Littrow #Pulse compressors #Transmissive gratings |
Tipo |
期刊论文 |