Coherent light generators – Particular active media – Semiconductor
Patent
1981-07-20
1983-08-23
Sikes, William L.
Coherent light generators
Particular active media
Semiconductor
372 46, H01S 319
Patent
active
044008139
ABSTRACT:
The ridge-structure in a ridge waveguide laser is notched at periodic intervals to produce a longitudinally crenelated ridge, and the electrode on the ridge side of the laser is alloyed only to the topmost surfaces of the ridge. As a result, the active region of the laser is pumped only in the regions that are underneath the topmost surfaces of the ridge, and the laser is caused to prefer the longitudinal modes whose maxima coincide with the spatial Fourier components of the pumped regions.
REFERENCES:
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patent: 3891302 (1975-06-01), Dabby et al.
patent: 4257011 (1981-03-01), Nakamura et al.
patent: 4375686 (1983-03-01), de Waard
Lasher, "Analysis of a Proposed Bistable Injection Laser," 1964, Solid-State Elect., vol. 7, pp. 707-716.
Nathan et al, "GaAs Injection Laser with Novel Mode Control and Switching Properties," Feb. 1965, J. Appl. Phys., vol. 36, No. 2, pp. 473-480.
Lee et al., "Repetitively Q-Switched Light Pulses from GaAs Injection Lasers with Tandem Double-Section Stripe Geometry," IEEE J. of Quant. Elect. vol. QE-6, No. 6, Jun. 1970, pp. 339-352.
Shubert, "Theory of Optical-Waveguide Distributed Lasers with Nonuniform Gain and Coupling," J. Appl. Phys. Jan. 1974, vol. 45, No. 1, pp. 209-216.
Doi et al., "InGaAsP/InP Distributed-Feedback Injection Lasers Fabricated by One-Step Liquid Phase Epitaxy," Sep. 15, 1979, Appl. Phys. Lett. vol. 35, No. 6, pp. 441-443.
de Waard, "A Novel Single Mode Laser Having Periodic Variations in the Stripe Width," Proceedings of Optical Comm. Conf., Amsterdam, Netherlands, Sep. 17-19, 1979, pp. 1-11.
Kaminow et al., "Single-Mode C. W. Ridge-Waveguide Laser Emitting at 1.55 pm, " Elect. Lett. vol. 15, No. 23, Nov. 8, 1979, pp. 73-74.
Bell Telephone Laboratories Incorporated
Dubosky D. D.
Jr. Leon Scott
Sherman S.
Sikes William L.
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