Abstract

When the infrared spectrum of a sample is to be recorded, it is not always convenient to locate the sample and its supportive apparatus within the sample chamber of a spectrometer. The beam-projecting device described herein permits redirection of the infrared beam from the sample chamber to a location outside the spectrometer. Thus the effort required to obtain infrared spectra of <i>in situ</i> samples using a Fourier transform spectrometer is greatly reduced. The unique capability of this infrared beam projector is its ability to accommodate the large diameter beam of a Fourier transform spectrometer, even in the far infrared mode, without appreciable loss of throughput.

Crystalline quartz as a far-infrared beam splitter for Fourier transform spectroscopy

John C. Brasunas, G. Mark Cushman, and B. Lakew
Appl. Opt. 36(13) 2893-2896 (1997)

Artificial diamond as a broadband infrared beam splitter for Fourier transform spectroscopy

John C. Brasunas, G. Mark Cushman, and Brook Lakew
Appl. Opt. 37(19) 4226-4229 (1998)

Fourier transform spectroscopy of LaS in the infrared

R. J. Winkel, Sumner P. Davis, and Mark C. Abrams
Appl. Opt. 35(16) 2874-2878 (1996)

Quantum Fourier-transform infrared spectroscopy in the fingerprint region

Yu Mukai, Ryo Okamoto, and Shigeki Takeuchi
Opt. Express 30(13) 22624-22636 (2022)

Fourier transform infrared spectroscopy with visible light

Chiara Lindner, Sebastian Wolf, Jens Kiessling, and Frank Kühnemann
Opt. Express 28(4) 4426-4432 (2020)