Single crystals of L-Alanine 2-Furoic acid (LAL2FA) were grown from aqueous solution by slow evaporation method at room temperature. The grown crystal was characterized by XRD, FTIR, optical, thermal, dielectric and second order nonlinear optical property. LAL2FA crystallizes into orthorhombic crystal system with space group P212121. The UV-Vis-NIR spectrum shows less optical absorption in the entire UV-Vis region with UV-cutoff of 257 nm. The dielectric constant, dielectric loss and ac conductivity of the crystal were studied as a function of frequency and the results are discussed. The second harmonic generation (SHG) in the sample was confirmed by Kurtz powder technique. It reveals that SHG efficiency is 0.55 and 0.25 greater than that of KDP and urea respectively.
