Patent ID: 8599888

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 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 either: after attenuating the optical power more on a shorter wavelength side than 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, or after attenuating the optical power more on the longer wavelength side than the shorter wavelength side of the wavelength band of the first amplified pulse light, with reference to the 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.