Patent ID: 11899338
Assignee: KLA CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 23:
24. The laser assembly of claim 19, wherein the first fundamental laser is configured to generate a first fundamental laser beam having a wavelength between approximately 1 μm and approximately 1.1 μm, and wherein the one or more intermediate frequency conversion stages comprise:
a first frequency doubling stage optically coupled to the first fundamental laser and configured to double the frequency of at least a first portion of the first fundamental laser beam to generate second harmonic light;
an optical parametric system (OPS) configured to generate a third frequency light having a wavelength between approximately 1.2 μm and approximately 2.0 μm; and
a frequency summing stage optically coupled to the first frequency doubling stage and to the OPS, and configured to sum at least a first portion of the second harmonic light and the third frequency light to generate the intermediate frequency light.