Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1991-11-29
1993-06-15
Epps, Georgia Y.
Coherent light generators
Particular beam control device
Optical output stabilization
372 18, 372 23, 372 25, 372 49, 372 92, 372 97, H01S 313
Patent
active
052205720
ABSTRACT:
A light pulse generator is provided comprising, a first and a second semiconductor laser diodes, each having a highly reflective surface and a non-reflective surface arranged opposite to each other, an optical system arranged between the highly reflective surfaces of the first and the second semiconductor laser diodes with the two non-reflective surfaces being confronted by each other, and a current supply for feeding the first and the second semiconductor laser diodes with discrete high-frequency currents respectively. The high-frequency currents repeat at intervals of a period equal to n times (n being an integer) the duration of light traveling one cycle within the optical resonator and have a phase difference of .pi.
from each other. Accordingly, the light pulse generator can produce a series of short-width light pulses while minimizing the generation of unwanted sub pulses.
REFERENCES:
patent: 4868833 (1989-09-01), Stultz et al.
Lau, K. Y., "Short Pulse and High Frequency Signal Generation in Semiconductor Lasers," Journal of Lightwave Technology, vol. 7, No. 2, Feb. 1989, pp. 400-419.
Bowers et al., "Actively Mode Locked Semiconductor Lasers," IEEE Journal of Quantum Electronics, vol. 25, No. 6, Jun. 1989, pp. 1426-1439.
Eisenstein et al., "InGaASP 1.3 .mu.m Optical Amplifier Modulator Integrated With a Fibre Resonator Mode Locked Laser," Electronics Letters, vol. 20, No. 15, Jul. 1984, pp. 624-625.
Ozeki et al., "Polarization Switching and Bistablity in an External Cavity Laser With a Polarization Sensitive Saturable Absorber," Applied Physics Letters, vol. 58, No. 20, May 1991, pp. 2214-2216.
Kawaguchi et al., "Picosecond Optical Pulse Generation From Mutually Coupled Laserdiodes by Synchronous Pump Mode Locking," Japanese Journal of Applied Physics, Part 2, Letters, vol. 30, No. 8A, Aug. 1991, pp. L1402-L1405.
Epps Georgia Y.
Pioneer Electronic Corporation
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