Lasers, Fiber Optics, and Communications

Broadband spectrographic method for precision alignment of compression gratings

[+] Author Affiliations
Shuai Li

Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, State Key Laboratory of High Field Laser Physics, No. 390 Qinghe Road, Shanghai 201800, China

University of Chinese Academy of Science, No. 19 Yuquan Road, Beijing 100049, China

Zhaoyang Li

Osaka University, Institute of Laser Engineering, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan

Cheng Wang, Yi Xu, Yanyan Li, Yuxin Leng, Ruxin Li

Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, State Key Laboratory of High Field Laser Physics, No. 390 Qinghe Road, Shanghai 201800, China

Opt. Eng. 55(8), 086105 (Aug 09, 2016). doi:10.1117/1.OE.55.8.086105
History: Received April 19, 2016; Accepted July 22, 2016
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Abstract.  Previous research on achieving the alignment of compression gratings has mainly focused on the parallelism of the gratings. We propose a promising method to achieve parallelism and especially accurately adjust the grating to its optimum working angle to achieve dispersion compensation. A spectrometer and a precisely adjustable mirror pair are cooperatively used to measure the wavelength of the light diffracted by the grating, satisfying the Littrow condition. Meanwhile, the tiny slit of the spectrometer can decrease the grating-tip and in-plane rotation error during the alignment procedure. Using this technique, the residual phase of the compressed pulse is optimized and the compressed pulse duration is 25.4 fs, which is 1.06 times that of the Fourier-transform-limited compressed pulse.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Shuai Li ; Zhaoyang Li ; Cheng Wang ; Yi Xu ; Yanyan Li, et al.
"Broadband spectrographic method for precision alignment of compression gratings", Opt. Eng. 55(8), 086105 (Aug 09, 2016). ; http://dx.doi.org/10.1117/1.OE.55.8.086105


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