Study on the depolarization grating

Quan Liu; Jianhong Wu; Shuangshuang Huang

doi:10.1117/12.2521993

12 March 2019 Study on the depolarization grating

Quan Liu, Jianhong Wu, Shuangshuang Huang

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110233A (2019) https://doi.org/10.1117/12.2521993
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

Abstract

The depolarization grating is needed particularly for use in imaging spectrometers used in sensing the atmosphere weak CO2 spectral band (1595nm - 1625 nm) at spectral resolution in the order of 0.1 nm whilst ensuring a high efficiency for both TE and TM polarizations. The diffraction characteristics of the depolarization grating have been investigated by using rigorous coupled wave theory. The simulation results show: the groove depth and duty cycle of the depolarization grating must be controlled within the range of 730nm-780nm and 0.3-0.37 respectively, in order to guarantee the 1 order diffraction efficiency is over 70% for both TE and TM polarizations at the atmosphere weak CO₂ spectral band. The depolarization grating with the period of 869nm in a fused-silica substrate of 120 mm × 97mm will be fabricated by holographic lithography - ion beam etching in late 2018.

Citation Download Citation

Quan Liu, Jianhong Wu, and Shuangshuang Huang "Study on the depolarization grating", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110233A (12 March 2019); https://doi.org/10.1117/12.2521993

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available