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Waveguide quasi-phase-matched sum-frequency generation device for high-efficiency optical sampling

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4 Author(s)
Suhara, T. ; Dept. of Electron., Osaka Univ., Japan ; Ishizuki, H. ; Fujimura, M. ; Nishihara, H.

A LiNbO3 waveguide quasi-phase-matched sum-frequency generation (SFG) device using a fan out domain-inverted grating for picosecond optical sampling was designed and fabricated. Sampling of signal waves at 1.5-μm wavelength by 25-ps sampling pulses generated by a gain-switched laser diode is demonstrated in a device of 5 mm length with a normalized SFG efficiency as high as 43%/W.

Published in:

Photonics Technology Letters, IEEE  (Volume:11 ,  Issue: 8 )