Abstract

A single spectrograph with an optical line-elimination filter (OLEF) has been successfully employed for Raman spectroscopy in place of a double or a triple spectrometer. It enables us to use an optical multichannel detector with much less optical loss caused by extra apertures, gratings, and mirrors. In recent years, a few types of OLEF have been developed to suppress Rayleigh scattering in Raman spectroscopy. Our OLEF uses the intrinsic and special optical properties of the AgGaSe crystal. According to our previous studies, the AgGaSe₂ OLEF can eliminate the emission wavelength of commercially available AlGaAs semiconductor lasers. We constructed a compact Raman spectrometer using an AlGaAs laser diode, a single monochromator, and a AgGaSe₂ OLEF, and applied it to the measurement of the Stokes and anti-Stokes Raman spectra of CCl₄.

Ultralow frequency Stokes and anti-Stokes Raman spectroscopy of single living cells and microparticles using a hot rubidium vapor filter

Jinda Lin and Yong-qing Li
Opt. Lett. 39(1) 108-110 (2014)

Highly efficient tunable picosecond deep ultraviolet laser system for Raman spectroscopy

Anton D. Shutov, Georgi V. Petrov, Da-Wei Wang, Marlan O. Scully, and Vladislav V. Yakovlev
Opt. Lett. 44(23) 5760-5763 (2019)

Simplified approach to low-frequency coherent anti-Stokes Raman spectroscopy using a sharp spectral edge filter

Liqing Ren, Maor Asher, Omer Yaffe, Yaron Silberberg, and Dan Oron
Opt. Lett. 44(15) 3637-3640 (2019)

Broadband two-stage frequency conversion of CO laser in AgGaSe₂ crystal

O. V. Budilova, A. A. Ionin, I. O. Kinyaevskiy, Yu. M. Klimachev, A. A. Kotkov, A. Yu. Kozlov, and G. V. Lanskii
Opt. Lett. 41(4) 777-780 (2016)

Optical rectification in a chalcopyrite AgGaSe₂ crystal for broadband terahertz radiation generation

B. N. Carnio, K. T. Zawilski, P. G. Schunemann, and A. Y. Elezzabi
Opt. Lett. 44(11) 2867-2870 (2019)