Optical waveguides – With optical coupler – Input/output coupler
Patent
1998-10-29
2000-12-12
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Input/output coupler
385 31, 372101, G02B 632
Patent
active
06160934&
ABSTRACT:
A hollow lensing duct to condense (intensify) light using a combination of focusing using a spherical or cylindrical lens followed by reflective waveguiding. The hollow duct tapers down from a wide input side to a narrow output side, with the input side consisting of a lens that may be coated with an antireflective coating for more efficient transmission into the duct. The inside surfaces of the hollow lens duct are appropriately coated to be reflective, preventing light from escaping by reflection as it travels along the duct (reflective waveguiding). The hollow duct has various applications for intensifying light, such as in the coupling of diode array pump light to solid state lasing materials.
REFERENCES:
patent: 5307430 (1994-04-01), Beach et al.
patent: 5936984 (1999-08-01), Meissner
R.J. Beach, "Theory and optimization of lens ducts," Applied Optics, vol. 35, pp. 2005-2015, Apr. 1996.
Beach Raymond J.
Bibeau Camille
Honea Eric C.
Lang John
Maderas Dennis
Palmer Phan T. H.
The Regents of the University of California
Thompson Alan H.
Wooldridge John P.
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