Abstract

A system is described which modifies a scanning spectrometer for the visible and the near ir in a simple manner for double beam operation, particularly for use with small samples. The apparatus utilizes a split pupil of a collimator in conjunction with a rotating sector to separate the two partial beams. The operation of the modulator and the electronic circuitry are discussed in detail. The system offers the advantage of simple construction with a high degree of compensation of the optical path lengths, and particularly, with close proximity of probe and reference specimen.

© 1971 Optical Society of America

Use of High-Speed Laser Spectroscopy to Study the Absorption Spectrum of Atmospheric Gases

V. E. Zuev, V. P. Lopasov, and M. M. Makogon
Appl. Opt. 10(11) 2452-2455 (1971)

Pulsed Gas Laser Magnetic Resonance Spectrometer

R. J. Wagner and G. A. Prinz
Appl. Opt. 10(9) 2060-2064 (1971)

An Interferometric Rejection Filter for Raman Spectroscopy

W. Proffitt, L. M. Fraas, P. Cervenka, and S. P. S. Porto
Appl. Opt. 10(3) 531-534 (1971)

Simple Model of Corner Reflector Phenomena

H. D. Eckhardt
Appl. Opt. 10(7) 1559-1566 (1971)

An Accommodometer: an Apparatus for Measuring the Total Accommodation Response of the Human Eye

G. J. van der Wildt and M. A. Bouman
Appl. Opt. 10(8) 1950-1958 (1971)