Achromatic phase matching for tunable second-harmonic generation by use of a grism.
Achromatic phase matching (APM) involves dispersing the light entering a nonlinear-optical crystal so that a wide range of wavelengths is simultaneously phase matched. Using an APM arrangement consisting of a grism (a grating on the surface of a prism) and three prisms, optimized to match a second-harmonic crystal phase-matching angle versus wavelength to high order, we efficiently doubled tunable fundamental light near 650nm with a bandwidth of >95 nm by use of a 4-mm type I beta-barium borate crystal. APM uses no moving parts, and unlike previous APM designs, ours avoids lenses and hence is easy to align and insensitive to translational misalignment of the beam.
Richman
B A
BA
Bisson
S E
SE
Trebino
R
R
Mitchell
M G
MG
Sidick
E
E
Jacobson
A
A