Abstract

A beam shaping system (BSS) for improving the throughput of a dispersive spectrometer is presented by employing two anamorphic lenses and a prism array to segment the beam. The BSS was designed based on the inverse method of beam shaping for laser diode bars and the means of an optical slicer. In an experiment, a BSS was set up so that the incident light of a neon lamp with a circular spot from an input fiber was transformed into an elliptical spot coupled into a slit of a spectrometer without a change of divergence. Spectral measurement results demonstrate that the throughput of the dispersive spectrometer was doubled without loss of spectral resolution. The BSS can be combined with the existing dispersive spectrometer to improve the luminous flux and signal-to-noise ratio.

© 2015 Optical Society of America

Improving the resolution and the throughput of spectrometers by a digital projection slit

Xiangyun Ma, Huijie Wang, Yang Wang, Da Chen, Wenliang Chen, and Qifeng Li
Opt. Express 25(19) 23045-23050 (2017)

High-performance nonscanning Fourier-transform spectrometer that uses a Wollaston prism array

Dan Komisarek, Karl Reichard, Dan Merdes, Dan Lysak, Philip Lam, Shudong Wu, and Shizhuo Yin
Appl. Opt. 43(20) 3983-3988 (2004)

Beam shaping design for compact and high-brightness fiber-coupled laser-diode system

Junhong Yu, Linui Guo, Hualing Wu, Zhao Wang, Hao Tan, Songxin Gao, Deyong Wu, and Kai Zhang
Appl. Opt. 54(18) 5759-5763 (2015)

Asymmetrical prism for beam shaping of laser diode stacks

Xiaodong Zeng, Changqing Cao, and Yuying An
Appl. Opt. 44(26) 5408-5414 (2005)

High brightness beam shaping and fiber coupling of laser-diode bars

Junhong Yu, Linui Guo, Hualing Wu, Zhao Wang, Hao Tan, Songxin Gao, Deyong Wu, and Kai Zhang
Appl. Opt. 54(11) 3513-3516 (2015)