On the quality of mercurous chloride crystals

Add time:08/20/2019    Source:sciencedirect.com

Large, oriented single crystals of mercurous chloride were grown by the physical vapor transport (PVT) method. Crystal quality was evaluated by birefringent interferometry and scattering measurements. A total variation of 2.2 × 10−4 in refractive index was estimated over the whole aperture (25 mm) of the crystal. A He-Ne laser beam 5 mm in diameter and with 40 dB dynamic range (from peak to sidelobes) showed that sidelobes are − 32 dB down for pure Hg2Cl2 crystals. The quality is suitable for Bragg cells which have the capability of long-term aperture, moderate resolution, good dynamic range, and reduced system volume compared to Bragg cells fabricated from other commercially available materials.

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