Generation of squeezed vacuum pulses at 810 nm using a 40-cm-long optical fiber.
We experimentally demonstrate the generation of a squeezed vacuum pulse at 810 nm with a fiber polarization interferometer. During femtosecond laser pulse propagation through an optical fiber in the normal dispersion regime, only self-phase modulation within a short length contributes to pulse squeezing since the laser pulse is immediately broadened. Guided acoustic-wave Brillouin scattering (GAWBS) noise that increases in proportional to the fiber length is also lower with shorter fibers. Consequently, a maximum noise reduction of 2.1 dB (4.8 dB when corrected for losses) is obtained using a 40-cm-long single mode optical fiber.
Department of Electronics and Electrical Engineering, Keio University, Kohoku-ku, Yokohama, Japan.
H
H
Nakagome
H
H
Ushio
Y
Y
Itoh
F
F
Kannari
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D007834:Lasers; D055100:Optical Fibers; D012031:Refractometry / Q000295:instrumentation*