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Proceedings Paper

Design and manufacture of transmission volume phase holographic grating used in VIS/NIR wave band
Author(s): Chunhuan Fang; Minxue Tang; Jianhong Wu
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Paper Abstract

Due to its uniform dispersion and higher diffraction efficiency, transmission volume phase holographic grating (VPHG) has been widely used for astronomical spectroscopy, ultrafast lasers compressors and wavelength division multiplexers. According to its application requirement and based on the Rigorous Coupled Wave Analysis (RCWA), a transmission VPHG with a frequency of 196lp/mm is designed and manufactured in this paper. The thickness of gelatin and the modulation of refraction index are optimized for high diffraction efficiency over a wavelength range from 420nm to 1000nm. The grating was recorded in dichromate gelatin (DCG) and in a symmetrical light path. By controlling the coating, exposure and post-processing conditions, the thickness of gelatin and the modulation of refraction index can be adjusted. The diffraction efficiency varied within the required wave band and the polarization property of the illumination wave were measured and compared with that of the theoretical ones. From the results, it can be seen that by adjusting and controlling the preparation conditions of DCG plates, the exposure value and post-processing technique, the peak diffraction efficiency of VPHG reaches to 47% and the average diffraction efficiency is above 35% in the spectral coverage, which is close to the theoretical values. This transmission VPHG can be applied in a prism-grating-prism (PGP) imaging spectrometer.

Paper Details

Date Published: 29 November 2011
PDF: 8 pages
Proc. SPIE 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology, 82020C (29 November 2011); doi: 10.1117/12.904962
Show Author Affiliations
Chunhuan Fang, Soochow Univ. (China)
Minxue Tang, Soochow Univ. (China)
Jianhong Wu, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 8202:
2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology
Hoi Sing Kwok; Fengzhou Fang; Lian Xiang Yang; Chongxiu Yu; Albert A. Weckenmann; Yanbing Hou; Jinxue Wang; Ji Zhao; Jinxue Wang; Peter Zeppenfeld; Boyu Ding; Boyu Ding; Liquan Dong; Liquan Dong; Jack K. Luo; Boyu Ding; Liquan Dong; Jinxue Wang, Editor(s)

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