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Proceedings Paper

Eye-safe solid state lasers for rangefinders
Author(s): D. P. Juyal; N. S. Vasan
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Paper Abstract

Serious eye hazard is posed by lasers operating at a wavelength below 1.4 micrometers . The vision impairment results largely from burn spots and thermal lesions in the active part of the retina or damage to the eye lens depending on the laser wavelength and light intensity reaching the eye. At present, most range finders for military use are based on the neodymium laser, which operates at 1.06 micrometers . In order to enhance the safety of such instruments, the operating wavelength can be shifted to 1.54 micrometers by using erbium laser or techniques such as parametric down conversion in nonlinear crystals or Stokes shift in pressurized methane cells. These options are reviewed and the current status of their technology is presented.

Paper Details

Date Published: 29 April 1999
PDF: 5 pages
Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); doi: 10.1117/12.346796
Show Author Affiliations
D. P. Juyal, Instruments Research and Development Establishment (India)
N. S. Vasan, Instruments Research and Development Establishment (India)


Published in SPIE Proceedings Vol. 3729:
Selected Papers from International Conference on Optics and Optoelectronics '98
Kehar Singh; Om Prakash Nijhawan; Arun Kumar Gupta; A. K. Musla, Editor(s)

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