Experimental verification is given for self-stabilization of the carrier-envelope phase (CEP) of idler pulses from a noncollinear optical parametric amplifier. The verification is performed by spectral interference (SI) between an octave-broadened supercontinuum (SC) and its second harmonic. This SC is generated by nonlinear propagation of the second harmonic of the idler through a photonic crystal fiber (PCF). Although the modulational instability causes the intensity and CEP fluctuation and the amplified spontaneous emission noise in PCF degrades the visibility of SI, the CEP is verified to be stabilized.
© 2004 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(320.5550) Ultrafast optics : Pulses
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
Xiaojun Fang and Takayoshi Kobayashi, "Self-stabilization of the carrier-envelope phase of an optical parametric amplifier verified with a photonic crystal fiber," Opt. Lett. 29, 1282-1284 (2004)