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1 article for “ORQPM”

• Published Subscription Original Research 20 May 2026

  Total-internal-reflection-based optical rotation quasi-phase-matching for efficient second-harmonic generation in Cadmium Germanium Arsenide crystal

  By Snigdha Sinha, Dr.Sumita Deb, Dr. Minakshi Deb Barma, Dr. Sumita Deb, Susmita Paul

  Abstract: This study investigates a total-internal-reflection (TIR)-based optical rotation quasi-phase-matching (ORQPM) approach for second harmonic generation within a cadmium germanium arsenide crystal slab. The crystal is coated with a thin film of yttrium oxide to facilitate precise control over phase shifts between p- and s-polarized light upon reflection at the slab-film interface. By leveraging the interplay between TIR- induced optical rotation and fractional QPM effects at designated bounce points, the configuration …

  Published in International Journal of Crystalline Materials · Vol. 3, Issue 1, 2026 Read article →