Methods for simultaneous suppression of laser pulsations and con

Details Methods for simultaneous suppression of laser pulsations and con Methods for simultaneous suppression of laser pulsations and con

1979-08-23

1981-10-27

Davie, James W.

Oscillators

Molecular or particle resonant type

331 945C, 350 9611, H01S 319

Patent

active

042976510

ABSTRACT:
Semiconductor lasers exhibit transient relaxation oscillations on start-up and specific lasers often exhibit sustained spontaneous pulsations caused probably by crystalline defects. These fluctuations are suppressed by coupling laser emission into a 0.3 to 2 cm. length of waveguide and coupling light reflected from the end of the waveguide back into the laser. Embodiments disclosed include one utilizing a length of optical fibre, while others are integrated optical structures.

REFERENCES:
patent: 4054363 (1977-10-01), Suematsu
patent: 4065730 (1977-12-01), Minden
patent: 4079339 (1978-03-01), Kobayashi et al.
patent: 4092659 (1978-05-01), Ettenberg
patent: 4101845 (1978-07-01), Russer
patent: 4111521 (1978-09-01), Streifer et al.
patent: 4112389 (1978-09-01), Streifer et al.
patent: 4136928 (1979-01-01), Logan et al.
patent: 4162460 (1979-07-01), Gonda
H. Kressel et al., Semiconductor Lasers and Heterojunction LEDs, _published 1977, Academic Press, p. 488.
Exxon, Laser Focus, May 1979, p. 77.

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