Desert Beam Technologies LLC, 3542 N Geronimo Avenue, Tucson, Arizona 85705, USA.
Opt Lett. 2012 Jan 1;37(1):25-7. doi: 10.1364/OL.37.000025.
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.
本文展示了单波长和双波长工作的垂直外腔面发射激光器（VECSEL）的宽波长调谐能力。在窄线宽单波长 VECSEL 的腔外采用基于衍射光栅的外部反馈，可以实现超过 10nm 的连续波长调谐。采用双反馈结构实现可调谐双色发射，演示了两个激光波长的差频从 300GHz 到 3.5THz 的调谐能力。
