“…For the purpose of reliable laser frequency conversion, NLO crystals need to have a large NLO coefficient in the phase matchable direction, large birefringence, wide transparency range, high damage threshold, broad angular, spectral and temperature bandwidth, good chemical and mechanical stability, ease of growth, low cost and small walk-off effect. Compounds of amino acids and their complexes belong to a family of organic materials that have applications in nonlinear optics [3][4][5][6]. Amino acids are interesting materials for NLO application as they contain a proton donor carboxyl acid (-COO) group and the proton acceptor amino (NH 2 ) group in them.…”