Grating-based wavelength control of single- and two-color vertical-external-cavity-surface-emitting lasers.
Wide wavelength tunability of single- and two-color operating vertical-external-cavity-surface-emitting lasers (VECSELs) is demonstrated. Employing an external feedback based on a diffractive grating outside the cavity of a narrow-line single-color VECSEL allows for a continuous tuning of the emission wavelength over 10 nm. Employing a dual-feedback-configuration for tunable two-color emission, a tunability of the difference frequency between the two lasing wavelengths from 300 gigahertz to up to 3.5 terahertz is demonstrated.
Desert Beam Technologies LLC, 3542 N Geronimo Avenue, Tucson, Arizona 85705, USA. mscheller@optics.arizona.edu
Maik
M
Scheller
Stephan W
SW
Koch
Jerome V
JV
Moloney