Open AccessCompact broadband high-resolution infrared spectrometer with a dihedral reflector
Author(s) -
Yajun Pang,
Yinxin Zhang,
Huaidong Yang,
Zhanhua Huang,
Guofan Jin
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.014960
Subject(s) - optics , spectrometer , wavelength , spectral resolution , infrared , broadband , resolution (logic) , diffraction grating , materials science , diffraction , diffraction efficiency , physics , spectral line , computer science , astronomy , artificial intelligence
We demonstrate a compact broadband high-resolution spectrometer approach. A dihedral reflector is used to reflect the dispersed light back to the grating for a second diffraction, folding the light path in a compact space, and enhancing the spectral resolution. The theoretical formulas for the system are strictly derived. In addition, a prototype of this spectrometer for fiber communication in the infrared wavelength range has been built. The optics can fit inside a volume of 12 cm × 14 cm × 5 cm and its spectral resolution is 57 pm over a wide wavelength range from 1250 nm to 1650 nm.