Distributed feedback filter and laser

Oscillators – Molecular or particle resonant type

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357 18, H01S 319

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active

041617029

ABSTRACT:
A distributed feedback optical device using a single crystal boule prepared with periodic spatial striations of ternary Pb.sub.1-x Sn.sub.x Te and Yb impurity atoms forming a layered array of planar p-n junctions normal to the axis of light emission. Crystal surfaces parallel to the axis are coated with a reflective, electrical insulator. Free scattering losses are minimized by applying a magnetic field along the longitudinal axis.

REFERENCES:
patent: 3983509 (1976-09-01), Scifres et al.
patent: 4023118 (1977-05-01), Kessler et al.
patent: 4081763 (1978-03-01), Vlasenko et al.
Flicker et al., "Increased Tuning Range of Pb.sub.1-x Sn.sub.x Se Diode Lrs Using Small Magnetic Fields", IEEE J. of Quantum Electronics, vol. QE-12, No. 6, Jun. 1976, pp. 326-330.

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