Optical waveguides – With optical coupler – Input/output coupler
Patent
1992-11-30
1994-04-26
Gonzalez, Frank
Optical waveguides
With optical coupler
Input/output coupler
385 33, 385 88, 385 93, 385902, 359710, 359581, 359589, 372101, G02B 626
Patent
active
053074300
ABSTRACT:
A lensing duct to condense (intensify) light using a combination of front surface lensing and reflective waveguiding. The duct tapers down from a wide input side to a narrow output side, with the input side being lens-shaped and coated with an antireflective coating for more efficient transmission into the duct. The four side surfaces are uncoated, preventing light from escaping by total internal reflection as it travels along the duct (reflective waveguiding). The duct has various applications for intensifying light, such as in the coupling of diode array pump light to solid state lasing materials, and can be fabricated from inexpensive glass and plastic.
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R. Beach et al., Passively Q-Switched Transverse-Diode-Pumped Nd.sup.3+ :YFL Laser Oscillator, Optics Letters, vol. 17, No. 2, Jan. 15, 1992.
Beach Raymond J.
Benett William J.
Gaither Roger S.
Gonzalez Frank
Moser William R.
Sartorio Henry P.
The United States of America as represented by the United States
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