Optical-damage-free guided second-harmonic generation in 1% MgO-doped stoichiometric lithium tantalate.
Room-temperature cw second-harmonic generation from telecom wavelengths, with 30% W(-1) cm(-2) efficiency and second-harmonic power levels up to 41 mW, was achieved in buried waveguides fabricated by reverse-proton exchange in 1% MgO-doped stoichiometric lithium tantalate without any evidence of optical damage. The technology proves suitable for the realization of efficient nonlinear frequency converters and all-optical devices.
Lobino
M
M
Dipartimento di Fisica-Politecnico INFM, and Instituto di Fotonica e Nanotecnologie-CNR, Piazza L. da Vinci 32, 20133 Milan, Italy.
Marangoni
M
M
Ramponi
R
R
Cianci
E
E
Foglietti
V
V
Takekawa
S
S
Nakamura
M
M
Kitamura
K
K