Wide Range Continuously Tunable Thin Film Laser.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent describes a continuously tunable thin film laser which is prepared from two different compounds known to have lasing capabilities at different wavelengths and also having one component in common. The two compounds are caused to be deposited in a thin film layer of varying concentration so as to produce a final thin film of lasing material which changes in composition along a selected axis from a layer of laser material comprising substantially wholly one of the compounds, through varying gradient degrees of relative concentrations of the two compounds to a final gradient which may comprise substantially wholly the other compound of laser material. A source of excitation energy is provided, together with means for producing relative motion between the thin film and the source of the excitation energy so that the laser output is continuously tunable over an extremely broad band of outputs.
- Lasers and Masers