Dichroic mirror embedded in a submicrometer waveguide for enhanced resonant nonlinear optical devices.
We report the design, fabrication and characterization of novel dichroic mirrors embedded in a tightly confining AlGaAs/Al(x)O(y) waveguide. Reflection at the first-harmonic wavelength as high as 93% is achieved, while high transmission is maintained at the second-harmonic wavelength. The measured cavity spectrum is in excellent agreement with finite-difference time-domain simulations. Such a mirror is essential for achieving resonant enhancement of second-harmonic generation.
Scaccabarozzi
Luigi
L
Department of Applied Physics, Stanford University, California 94305, USA.
Fejer
M M
MM
Huo
Yijie
Y
Fan
Shanhui
S
Yu
Xiaojun
X
Harris
James S
JS