NTRS - NASA Technical Reports Server

Back to Results
Investigation of ultra wideband multi-channel dichroic beamsplitters from 0.3 to 52 micronsThe development of a set of multi-channel dichroics which includes a 6 channel dichroic operating over the wavelength region from 0.3 to 52 microns is described. In order to achieve the optimum performance, the optical constraints of PbTe, Ge, and CdTe coatings in the strongly absorptive region have been determined by use of a new iterative method using normal incidence reflectance measurement of the multilayer together with initial values of energy gap and infinite refractive index for the semiconductor model. The design and manufacture of the dichroics is discussed and the final results are presented.
Document ID
Document Type
Reprint (Version printed in journal)
Zhang, K. Q. (Reading Univ. United Kingdom)
Hunneman, R. (Reading Univ. United Kingdom)
Seeley, J. S. (Reading Univ. United Kingdom)
Hawkins, G. J. (Reading, University United Kingdom)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Infrared Physics
Volume: 30
Issue: 1, 19
ISSN: 0020-0891
Subject Category
Distribution Limits