Growth and characterization of K3Li2(TaxNb1−x)5O15 crystals for blue second-harmonic-generation applications

Abstract

Potassium lithium tantalate niobate, K3Li2(TaxNb1−x)5O15, or KLTN single crystals were grown by spontaneous crystallization method, and it has been demonstrated that the KLTN crystal has high potential as a nonlinear crystal for blue second-harmonic-generation (SHG) applications. Ta substitution for Nb site in K3Li2Nb5O15 crystal improves the transparency in the blue light region and decolorizes the material. Compared with K3Li2Nb5O15, the K3Li2Ta5O15 crystal exhibits a 60 nm blueshift of the absorption edge from 376 to 316 nm, and decreases its absorption coefficient from 2.3 to 0.3 cm−1 at 400 nm. The phase-matched frequency doubling of the Ti:sapphire infrared laser for blue SHG at room temperature has been demonstrated with the KLTN bulk crystal.

Spectroscopic and upconversion properties of Er3+/Yb3+-codoped KLTN single crystal

“…(12) and (13) indicate that the green and red emissions will have a quadratic power dependence on the laser power, which coincides well with the conclusion of the pump power dependence analyses.…”

“…It can be used for blue second harmonic generation (SHG) due to its large nonlinear optical coefficients and high photorefractive resistance threshold [12]. However, the basic spectroscopic properties of RE ions doped KLTN single crystal have seldom been investigated.…”

Growth and characterization studies of organic NLO crystals of benzimidazole by melt technique

“…[6][7][8][9][10][11][12][13]. Organic crystals with large second-order nonlinear susceptibilities are of great interest because of their potential use as optical parametric amplifier and optical parametric oscillator in the infrared region.…”

Potassium Lithium Niobate Films Derived from Aqueous Precursor Solution

“…2,3 Recently, high-quality KLN single crystals were grown by the micropulling method. 4 K 3 Li 2 (Ta x Nb 1Ϫx ) 5 O 15 crystals, in which Ta is partially substituted for Nb, were grown by the spontaneous crystallization method. 5 K 3 Li 2 (Ta x Nb 1Ϫx ) 5 O 15 crystals have improved transparency in the blue light region and are expected to be applied for blue second harmonic generation (SHG).…”

“…4 K 3 Li 2 (Ta x Nb 1Ϫx ) 5 O 15 crystals, in which Ta is partially substituted for Nb, were grown by the spontaneous crystallization method. 5 K 3 Li 2 (Ta x Nb 1Ϫx ) 5 O 15 crystals have improved transparency in the blue light region and are expected to be applied for blue second harmonic generation (SHG). On the other hand, processing of tungsten-bronze epitaxial films has been studied intensively for the applications to integrated electrooptical devices.…”