Patent ID: 11955763
Assignee: SUNRISE INTERNATIONAL, INC.
Field: Optics (Instruments)
Classification: CPC H  B  C | IPC B  C  H

Claim 0:
1. A multi-stage amplifier for use in an apparatus for laser shock peening, the multi-stage amplifier comprising:
a first stage having a first amplifier module configured to first amplify a laser beam having a first energy output from the apparatus, to output a first amplified beam having a second energy, wherein the first stage comprises arranged in a sequential order: a first optical isolator, a first vacuum relay imaging module (VRIM), and the first amplifier module, such that the laser beam passes sequentially through the optical isolator, the first VRIM, and the first amplifier module to output the first amplified beam,
wherein prior to the first amplifying to the second energy, the laser beam is collimated by the first VRIM to yield a larger diameter first collimated beam, and
a second stage having a second amplifier module configured to second amplify the first amplified beam having the second energy to output a second amplified beam having a third energy, wherein the second stage comprises arranged in a sequential order: a second VRIM and the second amplifier module, such that the first amplified beam passes sequentially through the second VRIM and the second amplifier module to output the second amplified beam,
wherein prior to the second amplifying to the third energy, the first amplified beam is collimated by the second VRIM to yield a larger diameter second collimated beam.