Abstract

A chevron-type dielectric bandpass filter set is described which combines laser line rejection by a factor > 10⁸ with a high throughput of Raman scattered light (70%). The rejection bandwidth is 60 cm^-1 full width at half-maximum. Stokes and anti-Stokes Raman spectra can be recorded simultaneously from approximately 20 cm^-1 from the laser line. The filter set, moreover, takes care of efficient coupling of microscope and spectrometer, replacing an otherwise necessary beamsplitter.

Ultraviolet narrow-band rejection filters composed of multiple metal and dielectric layers

Jian-Shang Sheng and Juh-Tzeng Lue
Appl. Opt. 31(28) 6117-6121 (1992)

A narrow band-rejection filter based on block copolymers

Takahiko Yamanaka, Shigeo Hara, and Toru Hirohata
Opt. Express 19(24) 24583-24588 (2011)

Narrow-bandpass filters with broad rejection band for single-mode waveguides

Jean Bittebierre and Basile Lazaridès
Appl. Opt. 40(1) 11-19 (2001)

Low-frequency shift Raman spectroscopy using atomic filters

Xiaobo Xue, Corey Janisch, Yizhu Chen, Zhiwen Liu, and Jingbiao Chen
Opt. Lett. 41(22) 5397-5400 (2016)

Rayleigh rejection filters for 193-nm ArF laser Raman spectroscopy

Robert L. McKenzie
Opt. Lett. 18(12) 995-997 (1993)