Coherent light generators – Particular active media – Semiconductor
Patent
1984-11-21
1987-07-14
Davie, James W.
Coherent light generators
Particular active media
Semiconductor
372 19, 372 20, 372 97, H01S 3098, H01S 310
Patent
active
046807691
ABSTRACT:
An injection laser fabricated in accordance with the teachings of the present invention comprises a laser cavity having first and second active laser regions disposed in tandem therein, means for injecting current into the first and second active laser regions to provide gain distributions over wavelength regions in the two active laser regions which partially overlap to form a combined gain distribution over a range of wavelengths and means for providing wavelength within the range. In various embodiments of the present invention, the means for providing wavelength selective reflector or means for coupling energy out of the active regions. Moreover, the wavelength of the output radiation in various embodiments is determined by the values of the injected current density in the two active laser regions and the relative magnitudes of the loss at specific wavelengths.
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Bell Communications Research Inc.
Davie James W.
Falk James W.
Gurey Stephen M.
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