Second-harmonic generation in aromatic organic compounds

Investigation on Synthesis, Growth, Structural and Optical Properties of a New Semiorganic Crystal 2-Aminopyridine Potassium Hydrogen Phthalate (2APKHP)

“…Bulk size crystal of 2APKHP were grown using these seed crystals from saturated solution by slow evaporation method at room temperature. A good optical quality of crystal with dimension 10x18x4 mm 3 was harvested in the period of 85 days. These crystals are non-hygroscopic and optically transparent.…”

“…An organic material shows poor mechanical and thermal properties and it is difficult to grow large optical quality crystal of these materials for device applications [2,3]. The organic materials have very large nonlinear susceptibilities compared with inorganic materials, but their use is foil by their low optical transparencies, poor mechanical properties, low laser damage threshold and an inability to produce and process large crystals.…”

Investigation of organic nonlinear optical crystals for harmonic frequency conversion and electro-optics. Final technical report

“…(C6H4NH2), density =1.215 g/cm3, melting point =125 OC. The useful transmission range of ABP extends from 420 nm to 1400 nm, and its powder SHG efficiency is 360 times of ADP [3]. Therefore, single crystals of ABP are promising for generating green and blue laser beams from Nd:YAG or semiconductor diode laser.…”

4,4'-Methylenediiminobis(benzophenone)

“…Recently, crystals of 4-aminobenzophenone (ABP) were discovered to be a new and highly effective non-linear optical (NLO) material (Frazier & Cockerham, 1987). In an attempt to improve on this material, we carried out a condensation reaction…”