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Blaszuk; Paul R.
Lebanon, CT
No. of patents:

Patent Number Title Of Patent Date Issued
5189681 High powered laser with reduced optical aberration February 23, 1993
A high power convective flow gas laser having reduced aberration is characterized by negative branch unstable resonator configuration. The present laser is configured to invert an intracavity beam about a focal point within the optical cavity, thereby avoiding a region of high temper
5185753 Circular and elliptical polarization of a high power laser by adjoint feedback February 9, 1993
An unstable resonator system is controlled in polarization by the use of a compound resonator in which the parent resonator is coupled to a polarization control leg by an aperture that passes a small portion of the output beam into a polarization control element and returns a polarized
5179564 Linear polarization control of high power lasers January 12, 1993
An unstable laser resonator is controlled in polarization by the use of a control leg coupled to the parent resonator and having a linear polarization control element therein, so that control of a low power beam in said control leg serves to control the polarization of the parent res
5157684 Optically pulsed laser October 20, 1992
An unstable resonator, dc excited, is pulsed using an adjoint coupled beam of low power as the pulsing element. The resonator feedback consists of the self-feedback and the adjoint beam feedback. The self-feedback can be sufficient for self-oscillation and pulsed operation can be achieve
4780607 Laser beam power monitoring arrangement October 25, 1988
A monitoring arrangement monitors the power of a light beam which travels in a predetermined path between a laser and a destination location and is reflected at a predetermined location of the path from a reflecting surface of a deflecting mirror, with attendant inherent light scattering
4429211 Laser pipe welding system for nonstationary pipe January 31, 1984
A laser pipe welding system for welding around a pipe includes a pair of focusing heads each welding half the pipe circumference, a seam tracker to keep the focal spot on the seam to compensate for axial and radial variations, an active beam alignment system for real-time
4403828 Damage resistant coated laser mirror September 13, 1983
A damage resistant laser mirror is disclosed comprising a copper substrate highly polished to an optical finish coated with a thin layer of molybdenum or tungsten. The composite has good reflecting properties, is damage-tough, and conducts heat well away from the reflective coating. The
4370540 Reflective beam rotator January 25, 1983
An apparatus adapted for rotating a beam of radiation to obtain azimuthal and radial time averaging of the intensity distribution incident onto a workpiece is disclosed. The apparatus includes a housing adapted for rotation about a centerline axis, an entrance port and an exit port a

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