INFRARED COATING STUDIES.

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Abstract:

Families of curves were computed for the convenient determination of the refractive index of non-absorbing quarterwave films on substrates of known index. The refractive indices of films of ZnTe, ZnS and PbCl2 in their non-absorbing infrared regions were determined. Survey reststrahlen measurements were continued to include crystals of PbMoO4, CaWO4, topaz, SiC, GaP and GaAs. Calculations of enhanced reflectance MgO reststrahlen films were carried out. With this technique good rectangular shaped reflection band filters for the 14 to 24 micron region are feasible. Calculations of filters embodying MgO reststrahlen films were made. With them it appears feasible to produce good pass band filters for the 30 micron region, as well as low pass transmission filters cutting sharply at this wavelength.

Author(s):
Turner, A. F.
Author Organization(s):
BAUSCH AND LOMB INC ROCHESTER N Y RESEARCH AND DEVELOPMENT DIV
Descriptive Note:
Final rept. 15 Mar-15 Jun 66.
Pagination:
0013

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DA-44-009-AMC-124(T)
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*OPTICAL COATINGS, *INFRARED OPTICAL MATERIALS, *INFRARED FILTERS, FILMS, BANDPASS FILTERS, LOW PASS FILTERS, INFRARED RADIATION, MAGNESIUM COMPOUNDS, OXIDES, REFLECTION, REFRACTIVE INDEX, VAPOR PLATING, VACUUM APPARATUS, EMISSIVITY
Field(s)/Group(s):
Coatings, Colorants and Finishes, Optics
Keyword(s):
RESTSTRAHLEN
Report Date:
1966 Jun 15