Semi-transparent monitor detector for surface emitting light emi

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation

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257 53, 257 54, 257 80, 257 81, 257 82, 257431, 257443, 257449, 257458, 257461, 372 50, 372 98, H01L 3100

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active

060376449

ABSTRACT:
A structure for providing direct feedback of power emitted by a surface emitting light emitting device and the subsequent optical power control of the device is disclosed. In a preferred embodiment, an array of vertical cavity surface emitting lasers emit light having a wavelength which is partially detected by an array of photodetectors. The semi-transparent photodetectors array has an absorption coefficient which is relatively small at the wavelength of light emitted by the lasers. Most of the emitted light will be transmitted through the detectors while a small insignificant fraction in magnitude is absorbed and converted to photocurrent for monitoring the output power of the devices. The structure of the device of the present disclosure is simple, readily fabricated through uncomplicated techniques and of materials which do not effect the beam characteristics of the surface emitting devices.

REFERENCES:
patent: 5122852 (1992-06-01), Chan
patent: 5285466 (1994-02-01), Tabatabaie
patent: 5353498 (1994-10-01), Fillion et al.
patent: 5475701 (1995-12-01), Hibbs Brenner
patent: 5491712 (1996-02-01), Lin et al.
patent: 5574744 (1996-11-01), Gaw et al.
patent: 5606572 (1997-02-01), Swirhun et al.
patent: 5742630 (1998-04-01), Jiang et al.
patent: 5751757 (1998-05-01), Jiang et al.
patent: 5757829 (1998-05-01), Jiang et al.
patent: 5801402 (1998-09-01), Shin
patent: 5812582 (1998-09-01), Gilliland et al.
patent: 5903016 (1999-05-01), Whitney
Sze, Physics of Semiconductor Devices, 2.sup. nd ed. 1981 p. 749.
Hasnain, et al. Monolithic Integration of Photodetector with VCSEL, Electronic Letters, vol. 27, No. 18, Aug. 29, 1991.
Patent Abstracts of Japan, vol. 010, No. 289 (E-442), Oct. 2, 1986 & JP 61 108186 A (Seiko Epson Corp.), May 26, 1986.
Patent Abstracts of Japan, vol. 012, No. 304 (E-646), Aug. 18, 1988 & JP 63 073687 A (Mitsubishi Electric Corp), Apr. 4, 1988.
Patent Abstracts of Japan, vol. 097, No. 011, Nov. 28, 1997 & JP 09 199795 A (Matsushita Electric Ind Co. Ltd), Jul. 31, 1997.
Patent Abstracts of Japan, vol. 095, No. 008, Sep. 29, 1995 & JP 07 135487 A (Hitachi Ltd; Others: 01), May 23, 1995.
International Search Report, Applicant's file reference 17074 PCT, International Application No. PCT US/98/18591, International filing date, Apr. 9, 1998.
D.E. Carlson, "Amorphous Silicon Solar Cells," IEEE Trans. Electron Devices, ED-24, 449 (1977).
Physics of Semiconductor Devices, by S. M. Sze p. 828 & 829.

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