Xd. Mu et al., Cavity-enhanced and quasiphase-matched multi-order reflection-second-harmonic generation from GaAs/AlAs and GaAs/AlGaAs multilayers, APPL PHYS L, 79(5), 2001, pp. 569-571
We have observed quasiphase-matched second-harmonic generation in the refle
ction geometry from GaAs/AlAs multilayers. By using GaAs/AlGaAs multilayers
and Fresnel reflection as a cavity, we have also achieved cavity-enhanced
nonphase-matched second-harmonic generation from GaAs/AlAs multilayers. The
linewidth for the first order reflection-second-harmonic generation is lim
ited only by wave-vector mismatch. In addition, we have demonstrated two-or
der-of-magnitude enhancement on the conversion efficiency by using the cavi
ty. (C) 2001 American Institute of Physics.