Optical: systems and elements – Optical frequency converter – Harmonic generator
Patent
1994-05-05
1996-07-30
Shafer, Ricky D.
Optical: systems and elements
Optical frequency converter
Harmonic generator
359330, 372 21, 372 22, 385122, H03F 700, G02F 135, H01S 310
Patent
active
055417655
ABSTRACT:
A change in the wavelength of a laser beam is achieved by causing the beam to have a conical wavefront and applying it to a nonlinear crystal so that the beam converges along the center axis producing an output beam of a different wavelength. The conical wavefront is achieved in wavefront conversion means by use of lenses, mirrors and crystals with conical surfaces. Adjustability is provided by diverging the beam first and then converging it, with adjustment in the spacing between the divergence means and convergence means of a wavefront conversion means.
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