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Fabrication of Compound TIR Prism for Use in Polarized Laser Resonator Cavity

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Abstract

Present work is attempted to developed fabrication and characterization technique for compound total internal reflection (TIR) prism with intended advantages of broader range of out coupling power and polarization compensation properties in laser resonator cavity as compared to cross porro based configuration. Compound TIR prism contains one of the polished surfaces inclined with 45 degree to one of the roof formed by three other polished surface inclined at 90 degree with each other. We developed polishing process by calculating and controlling dihedral angles between either of roof planes with other polishing surfaces so that 90 degree roof and pyramidal error can control within 10 arcs second. Retro reflection error of prism was verified interferometrically and found 20 sec of an arc.

© 2014 Optical Society of America

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