Accession Number:

ADA010461

Title:

A Review of Techniques for Measuring Small Optical Losses in Infrared Transmitting Materials,

Descriptive Note:

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MASS

Personal Author(s):

• Skolnik,Lyn H.

Report Date:

1975-05-15

Pagination or Media Count:

32.0

Abstract:

The authors review some recent developments in techniques for measuring small absorption coefficients in the infrared spectral region. This paper considers thermal methods such as thermocouple, optical and acoustic calorimetry as well as some direct loss techniques including laser differential attenuation measurements and emittance spectroscopy. The various methods are compared on the basis of sensitivity and ease of implementation advantages and disadvantages of each technique are discussed. Some consideration is given to methods for separating surface, bulk, and scattering losses.

Descriptors:

• *INFRARED RADIATION
• *INFRARED OPTICAL MATERIALS
• *ABSORPTION COEFFICIENTS
• *INFRARED WINDOWS
• MEASUREMENT
• OPTICAL PROPERTIES
• INFRARED SPECTROSCOPY
• SURFACE PROPERTIES
• THERMOCOUPLES
• CALORIMETRY
• OPTICAL INSTRUMENTS

Subject Categories:

• Lasers and Masers
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE