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An unstable resonator laser with a modified output coupling scheme

Journal Article · · Journal of Applied Physics; (USA)
DOI:https://doi.org/10.1063/1.344989· OSTI ID:6900549
; ; ;  [1]
  1. Center for Advanced Technology, PO Cat, Rajendra Nagar, Indore 452012, India (IN)
Unstable resonator lasers with a scraper mirror as output coupler suffers from diffraction effects associated with uniformly illuminated aperture. The near-field intensity distribution is annular in shape with minima at the center. In this communication, a modified resonator is suggested in which the resonator is folded and the scraper mirror is replaced by a partially transmitting mirror to provide the output coupling. The modified resonator is applied to a copper vapor laser. Observed near-field distribution is uniform across the beam and the intensity of the diffraction rings in the far-field profiles is considerably reduced.
OSTI ID:
6900549
Journal Information:
Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:8; ISSN 0021-8979; ISSN JAPIA
Country of Publication:
United States
Language:
English