Solvent effects and polymorphic transformation of organic nonlinear optical crystal L-pyroglutamic acid in solution growth processes

Synthesis, growth, thermal, optical and mechanical properties of new organic NLO crystal: l-alanine dl-malic acid

“…Nonlinear optical materials find a number of applications like frequency conversion, light modulation, optical switching, optical memory storage and optical second harmonic generation (SHG) [1][2][3]. In the recent years, effort has been made on organic-materials-mixed amino acid crystals, in order to improve the chemical stability, laser damage threshold and nonlinear optical properties.…”

Nonlinear optical diglycine hydrochloride: Synthesis, crystal growth and structural characteristics

“…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.…”

Design of a solution crystal growth crystallizer with a versatile electronic reciprocal motion control for a crystals holder

“…Various new nonlinear optical crystals which holds promise for their use in nonlinear optical devices such as L-arginine phosphate, L-Histidine tetrafluoborate, L-arginine tetrafluoro borate, Methyl-(2,4-dintropheny)-aminopropanoate: 2-Methyl-4-nitroaniline (MNA:MAP) and L-pyroglutamic acid of high quality have been grown using above mentioned reciprocating system, by temperature lowering technique described elsewhere [6][7][8][9][10]. In the investigator's observation and experience, there is definite improvement in the quality of grown crystals and success rates of the growth runs, which is evident from the transparency and less scattering under laser illumination.…”