Patent ID: 9651793
Date: 2017-05-16
CPC Classifications: G02B,H01S

Claim:
1. A laser pulse modulation device comprising: a first laser source used to generate a first linearly-polarized pulsed laser beam which osculates in a direction parallel to a propagation direction thereof; a second laser source used to generate a second linearly-polarized pulsed laser beam which oscillates in a direction perpendicular to a propagation direction thereof; a polarizing beam splitter used to overlay the first linearly-polarized pulsed laser beam and the second linearly-polarized pulsed laser beam to form a first combined pulsed laser beam; a beam splitter used to split incident light into multiple first split laser beams and multiple second split laser beams; and a reflector assembly used to reflect the second split laser beams transmitted from the beam splitter back to the beam splitter; wherein a pulse-width of the first combined pulsed laser beam is greater than that of the first linearly-polarized pulsed laser beam, and the pulse-width of the first combined pulsed laser beam is greater than that of the second linearly-polarized pulsed laser beam; wherein the pulse-width of the first linearly-polarized pulsed laser beam is ranged from 20 nanoseconds to 200 nanoseconds.