Coherent light generators – Particular beam control device – Tuning
Patent
1992-12-16
1994-06-28
Epps, Georgia Y.
Coherent light generators
Particular beam control device
Tuning
372102, 372107, 372101, H01S 310
Patent
active
053253787
ABSTRACT:
A grating tuned external cavity laser having improved mode selectivity and stability. A cylindrical lens is positioned between a laser amplifier and a prism pair beam expander to focus the laser beam to form a linear spot on a grating. The location of the cylindrical lens between the laser amplifier and the prism pair minimizes the optical length of the laser cavity. In this way, the wavelength separation between optical resonance modes is increased, and the mode selectivity and stability of the system is enhanced.
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Kasuya et al., "A Prism Ananorphic System for Gaussiar Beam Expander", Appl. Phys, 17, No. 2, Oct. 1978, pp. 131-136.
Epps Georgia Y.
Hewlett--Packard Company
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