Format

Send to:

Choose Destination
See comment in PubMed Commons below
Appl Opt. 1966 Apr 1;5(4):633-7. doi: 10.1364/AO.5.000633.

Thermal distortion of diffraction-limited optical elements.

Author information

  • 1Office of Naval Research, 495 Summer Street, Boston, Massachusetts 02210, USA.

Abstract

Recent developments of laser materials have advanced the state of the art to a point where the optical quality of many of these materials is approaching the diffraction limit. Using such components in a laser does not necessarily guarantee the generation of diffraction-limited laser beams. One of the severe problems is thermal distortion introduced in the optical cavity by the flash lamps. Ruby and glass lasers require a minimum of 0.6 J of heat deposition per joule of population inversion. Typical figures are 4-6 J per joule of population inversion.(1) Nonuniformities in the deposition of this heat cause optical distortions which virtually preclude diffraction-limited laser operation even if the materials themselves are of diffraction-limited optical quality. This paper will investigate these thermal effects in detail, and the relative sensitivity of a variety of materials to nonuniform energy depositions will be discussed. Water close to its point of maximum density and a certain special type of glass known as Pockels glass will be shown to have properties of particular interest for use in diffraction-limited lasers.

PMID:
20048908
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk