Coherent light generators – Particular active media – Semiconductor
Patent
1996-01-25
1998-09-15
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 29, 372 33, 372 36, 372 50, 372 96, 257 80, 257 81, 257 82, 257 98, 385 14, H01S 318, H01S 313, H01S 300, H01S 304
Patent
active
058090509
ABSTRACT:
An integrated laser-based light source that generates an output light beam having a controlled intensity. The light source comprises a package, a laser, a light sensor, and a beam splitter. The beam splitter is mounted in the package, together with the laser and the light sensor. The laser has one and only one light-emitting face from which it radiates a light beam as a radiated light beam. The light sensor generates an electrical signal representing the intensity of light energy falling on it. The beam splitter divides the radiated light beam into a fraction and a remainder, the remainder being the output light beam. The beam splitter operates by diffraction, scattering, or transmission to direct the fraction of the radiated light beam towards the light sensor.
REFERENCES:
patent: 4733094 (1988-03-01), Carpentier et al.
patent: 4760569 (1988-07-01), Mahlein
patent: 5247167 (1993-09-01), Bargerhuff et al.
patent: 5432537 (1995-07-01), Imakawa et al.
patent: 5579328 (1996-11-01), Habel et al.
Baldwin Richard R.
Corzine Scott W.
Holland William D.
Larson Leif Eric
Sears David M.
Bovernick Rodney B.
Hardcastle Ian
Hewlett--Packard Company
Leung Quyen Phan
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