Patent ID: 8237922
Filing Date: 2012-08-07
Classification: B23K,G01J,G02B

Abstract:
1. An apparatus that enables analysis across the entire optical spectrum from deep UV to far infrared of laser beam emitted from a laser beam source, comprising: a Fabry-Perot resonator including a first mirror having an anti-reflection coating on a first surface thereof that faces said source of said laser beam and a non-absorbing, highly reflective coating that transmits less than one percent (1%) of said laser beam on a second surface thereof that faces away from said source; said Fabry-Perot resonator including a second mirror having an anti-reflection coating on a second surface thereof that faces away from said source and a non-absorbing, highly reflective coating that tranmits less than one percent (1%) of said laser beam on a first surface thereof that faces said source; said first and second mirrors disposed in spaced apart, parallel, and axial alignment relation to one another in a path of travel of said laser beam, said first and second mirrors being tilted relative to said laser beam at an angle greater than zero degrees and less than five degrees and said first and second mirrors being spaced apart by a few millimeters or less; a focusing lens disposed between said laser beam source and said Fabry-Perot resonator, said focusing lens operative to cause convergence of said laser beam; a first pixelated detector for detecting spots of light that pass through said focusing lens and said Fabry-Perot resonator; said focusing lens, said attenuation module, and said first pixelated detector being in axial alignment with one another in said path of travel of said laser beam, said focusing lens being closest to said laser beam source said first pixelated detector being furthest from said laser beam source, and said attenuation module being disposed between said focusing lens and said pixelated detector; whereby said laser beam is substantially attenuated and the transmitted light is spatially offset laterally and time delayed with each round trip in the Fabry-Perot resonator so that it can be analyzed by said first pixelated detector.