Abstract

We describe a single beam device that records continuously as a function of wavelength, simple quantities related to the reflectance and transmittance, (1 − R)/(1 + R) and (1 − T)/(1 + T). The unit is easily attached to any spectrometer. It is sensitive to changes in these quantities of about 1 × 10⁻⁴, while systematic errors in alignment set an absolute accuracy of about 1 × 10⁻³.

© 1968 Optical Society of America

A Sensitive Spectrophotometer for Optical Reflectance and Transmittance Measurements

D. D. Sell
Appl. Opt. 9(8) 1926-1930 (1970)

Simultaneous Measurement of the Transit Time of Radio and Optical Signals

L. E. Wood and M. C. Thompson
Appl. Opt. 7(10) 1955-1959 (1968)

Improvements in Photomultipliers with Total Internal Reflection Sensitivity Enhancement

Tomas Hirschfeld
Appl. Opt. 7(3) 443-449 (1968)

A Double Beam Astronomical Photometer

Thomas B. McCord
Appl. Opt. 7(3) 475-478 (1968)

A Double Beam, High Resolution Spectrometer for the Far Infrared

T. M. Hard and R. C. Lord
Appl. Opt. 7(4) 589-598 (1968)