Coherent light generators – Particular active media – Semiconductor
Patent
1993-03-05
1994-07-19
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 18, H01S 310
Patent
active
053316541
ABSTRACT:
A vertical-cavity, surface-emitting semiconductor diode laser having a monolithic and planar surface and having lateral anisotropy in order to control the polarization of the emitted beam of light. The diode laser includes a body of a semiconductor material having an active region therein which is adapted to generate radiation and emit the radiation from a surface of the body, and a separate reflecting mirror at opposite sides of the active region with at least one of the mirrors being partially transparent to the generated light to allow the light generated in the active region to be emitted therethrough. The anisotropy may be provided by utilizing anisotropy in the atomic or molecular structure of the materials forming the laser, or by anisotropic patterning or deliberate offset alignment in processing of the laser or through anisotropic structures in the laser cavity to control the polarization of the emitted beam.
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patent: 5255278 (1993-10-01), Yamanaka
Wipiejewski, T., Panzlaff, K., Zeeb, E., Ebeling, K. J., "Vertical cavity laser diodes with two-sided output and polarization control with external feedback," Univ. of Ulm, Germany (Sep. 1992).
Mukaihara, T., Koyama, F., Iga, K., "Stress Effect for Polarisation Control of Surface Emitting Lasers," Electronics Letters, vol. 28, No. 6 (Mar. 12,1992), pp. 555-556.
Jewell, J. L., Harbison, J. P., Scherer, A., Lee, H., Florez, L. T., "Vertical-Cavity Surface-Emitting Lasers: Design, Growth, Fabrication, Characterization," IEEE Journal of Quantum Electronics, vol. 27, No. 6 (Jun. 1991), pp. 1332-1346.
Chang-Hasnain, C. J., Harbison, J. P., Hasnain, G., Von Lehmen, A. C., Florez, L. T., Stoffel, N. G., "Dynamic, Polarization, and Transverse Mode Characteristics of Vertical Cavity Surface Emitting Lasers," IEEE Journal of Quantum Electronics, vol. 27, No. 6 (Jun. 1991), pp. 1402-1408.
Shimizu, M., Mukaihara, T., Baba, T., Koyama, F., Iga, K., "A Method of Polarization Stabilization in Surface Emitting Lasers," Japanese Journal of Applied Physics, vol. 30, No. 6A (Jun. 1991), pp. L 1015-L 1017.
Jewell Jack L.
Olbright Greg R.
Bovernick Rodney B.
McNutt Robert
Photonics Research Incorporated
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