Grating Beam Combiner

The fabrication, test, and analysis of a two-wave length dual-frequency beam sampling grating has been performed. Measurements of the efficiency, diffracted wavefront quality, frequency ratio, and skew are described. Analysis of the effects of nonzero skew and frequency ratio residual on its perform...

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Bibliographische Detailangaben
Hauptverfasser:	Schroeder,Michael E, Stumpf,Kenneth D, Mullahy,Mary A
Format:	Report
Sprache:	eng
Schlagworte:	Beam sampling BEAMS(RADIATION) BORESIGHTING DUAL MODE EFFICIENCY FREQUENCY Grating beam combiners GRATINGS(SPECTRA) LASER BEAMS Lasers and Masers LODE(Large Optics Demonstration Experiment) Optics PE62711E SAMPLING SKEWNESS Test Facilities, Equipment and Methods Wavelengths WURADCC5030107
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Beschreibung
Zusammenfassung:	The fabrication, test, and analysis of a two-wave length dual-frequency beam sampling grating has been performed. Measurements of the efficiency, diffracted wavefront quality, frequency ratio, and skew are described. Analysis of the effects of nonzero skew and frequency ratio residual on its performance are presented, as well as the required process tolerances to achieve acceptably low levels of each. A laboratory demonstration confirmed the invariance of the co-boresighting of the two wavelengths with respect to tilt of the grating. (Author)