Patent ID: 8290003

Claim:
A pulse light source, comprising: a semiconductor laser being capable of direct modulation and outputting pulse light; a first amplifier having a first optical amplification medium, the first amplifier inputting the pulse light outputted from the semiconductor laser into the first optical amplification medium thereof, and outputting first amplified pulse light; a first optical filter inputting the first amplified pulse light which is outputted from the first amplifier, and outputting a chirping component of the first amplified pulse light after attenuating the optical power on one more than that on the other of a shorter wavelength side and a longer wavelength side of a wavelength band of the first amplified pulse light, with reference to a max peak wavelength of the pulse light; and a second optical amplifier amplifying the chirping component of the first amplified pulse light outputted from the first optical filter and outputting second amplified pulse light.