Promising phase matchable nonlinear optical single crystal: O-benzyl-l-tyrosine-N-carboxy anhydride (BLT)

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2026年4月10日

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P. Vivek,
M. Rekha,
R. Arunkumar,
Ananth Steephen

摘要

Optically high-quality O-benzyl-l-tyrosine N-carboxy anhydride crystals were grown by slow evaporation with non-centrosymmetric monoclinic P21 space group. Transmittance study shows BLT has 253 nm cut-off wavelength with 73% transmittance in wavelength range of 253–800 nm. BLT’s laser damage threshold is 0.311GW/cm². Birefringence value of BLT is 0.230 and 0.116 in wavelength range of 500–700 nm with good optical homogeneity. For device fabrication, BLT can withstand up to 100 g stress. BLT crystal’s SHG efficiency was 1.81 times greater than KDP’s. Phase matching angle of BLT is Δm = 34° ± 1°. Output power of BLT linearity is starting at 4.1mW/cm².