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Primary Examiner: Cooper, Jack
Assistant Examiner:
Attorney: Inge; John R., Pannone; Joseph D., Bartlett; Milton D.

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Title: Coupled ion eye-safe laser material

Abstract: A coupled ion laser operating at a frequency determined by the energy levels characteristic of the coupling of a lanthanide or actinide group ion with an iron group ion in an orthoaluminate material, such as yttrium orthoaluminate, is described in which low threshold high efficiency starting operation at predetermined frequencies in the region of eye safety is provided.

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Inventors: Weber, Marvin J. (Wayland, MA, US)

Application Number: 484907
Filing Date: 1974-07-01
Publication_date: 1976-05-11
Assignee: Raytheon Company (Lexington, MA)
Primary Class(es): 252/301.4R
Other Classes:
US Patent Ref:

3550033	Dec, 1970	Ohlman et al.	252/301.
3591517	Jul, 1971	van der Ziel	252/301.
3719901	Mar, 1973	Monchamp et al.	252/301.
3725811	Apr, 1973	Murphy	252/301.

Other Refs: Other References: weber et al., "Applied Physics Letters" Vol. 15, No. 10, 1969, pp. 342-345.