LARGE NONLINEAR OPTICAL COEFFICIENT AND PHASE MATCHED SECOND HARMONIC GENERATION IN LiIO3

Abstract

The second harmonic of a Nd laser has been produced in LiIO3 in a phase matching direction of 30° to the c axis with high conversion efficiency. The nonlinear optical coefficient t31 is among the highest so far reported for phase matchable substances using λ = 1.06 μ. LiIO3 can be grown from water solutions with excellent optical quality.

Structure–Property Relationships in Li1−xHxIO3Type Complex Crystals

“…For example, in a complex crystal A ? By using formula [1], we can write each item of the bond-valence equation of a complex crystal, and then the complex crystal is decomposed into forms that can be quantitatively calculated by means of the dielectric theory of solids (15)(16)(17).…”

“…Single crystals of hexagonal lithium iodate ( -LiIO , space group P6 ) and orthorhombic hydrogen iodate (HIO , P2 2 2 ) have been of great interest for application in laser technology and in optoelectric devices, owing to their nonlinear optical properties (1)(2)(3). However, such applications require crystals of high quality and stability.…”

Optical harmonic generation and laser light frequency mixing processes in nonlinear media

“…Geusic et al [51] observed SHG at 532nm in Ba2NaNbO15 and KrLi4NbO3 using a lightly focused, continuously pumped, repetitively Q-switched Nd : YAG laser emitting light of wavelength 1.064/zm. Using ruby lasers (694.3 nm) and neodymium lasers (1.06/_tm), SHG was studied in some novel, strongly nonlinear materials, namely HIO3 [52] and Li[O3 [53]. Recently, Jerphagnon [54] corrected earlier values of the nonlinear susceptibilities of LiIO 3 by Maker's fringe technique [44] using a Nd 3 + : YAG laser with an acoustic Q-switching system.…”

Suitable Wind Turbine Selection using Evaluation of Wind Energy Potential in IRAN

“…The crystals used in second harmonic generation belong to the point group 6 and have a prismatic form, which is hexagonal in cross section. They are uni-axial and optically negative [5,6]. Various methods have been adopted by researchers [7 -11] to grow these crystals.…”

“…They have good nonlinear optical, electro-optical [3], photoelectric, and piezoelectric properties [4]. These crystals are of interest in second harmonic generation within the range 0.53 -1.06 µm [5]. The crystals used in second harmonic generation belong to the point group 6 and have a prismatic form, which is hexagonal in cross section.…”