Solar-pumped laser

Details Solar-pumped laser Solar-pumped laser

2008-07-22

2008-07-22

Hughes, Deandra M (Department: 3663)

Optical: systems and elements

Optical amplifier

Optical fiber

Reexamination Certificate

active

07403328

ABSTRACT:
The present invention provides a solar-pumped active device which utilizes a holographic antenna grating on a solar energy silicon substrate to select specific diffracted wavelength and couple pump wavelength in an approximately vertical way and converge the pump wavelength to excite an optical gain medium so that an optical amplifier or a laser can be obtained. The present invention requires no big size and is flexible over the surface shape and is suitable for free space optical communications on the ground and satellite optical communications. It means that the holographic antenna grating can be applied on the top floor of a building or on the glass surface of an outer wall. If it is applied to a satellite, the present invention can be deposited on a solar energy cell substrate to form a high optical amplification so that not only the electricity required in satellite optical communications can be reduced, but also a high-speed and large capacity of data can be transferred between satellites.

REFERENCES:
patent: 4743083 (1988-05-01), Schimpe
patent: 2002/0117675 (2002-08-01), Mascarenhas
patent: 2005/0053112 (2005-03-01), Shams-Zadeh-Amiri
patent: 62029190 (1987-02-01), None
Research Activities of Millilab 1999-2000. Millmetre Wave Laboratory of Finland. Joint Laboratory between VTT and Helsinki University of Technology.
ElSherbiny et al. Holographic Antenna Concept, Analysis, and Parameters. IEEE Transactions on Antennas and Propagation. vol. 52. No. 3. Mar. 2004.

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