Borate Materials in Nonlinear Optics

Becker, Petra

doi:10.1002/(sici)1521-4095(199809)10:13<979::aid-adma979>3.0.co;2-n

Cited by 1,413 publications

(792 citation statements)

References 53 publications

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“…Researchers have done a lot of work to explore new NLO materials for the IR application, and the combination of two or more different building units into crystal structures can be viewed as a feasible way to obtain new NLO compounds. Up to now, many reports indicate that cations with second order Jahn-Teller distortions, lone electron pairs or d 10 configuration can contribute to good SHG response with the cooperative effects of typical tetrahedral…”

Section: Introductionmentioning

confidence: 99%

Li2HgMS4 (M = Si, Ge, Sn): New Quaternary Diamond-Like Semiconductors for Infrared Laser Frequency Conversion

Pan

2017

Crystals

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Abstract:A new family of quaternary diamond-like semiconductors (DLSs), Li 2 HgMS 4 (M = Si, Ge, Sn), were successfully discovered for the first time. All of them are isostructural and crystallize in the polar space group (Pmn2 1 ). Seen from their structures, they exhibit a three-dimensional (3D) framework structure that is composed of countless 2D honeycomb layers stacked along the c axis. An interesting feature, specifically, that the LiS 4 tetrahedra connect with each other to build a 2D layer in the ac plane, is also observed. Experimental investigations show that their nonlinear optical responses are about 0.8 for Li 2 HgSiS 4 , 3.0 for Li 2 HgGeS 4 , and 4.0 for Li 2 HgSnS 4 times that of benchmark AgGaS 2 at the 55-88 µm particle size, respectively. In addition, Li 2 HgSiS 4 and Li 2 HgGeS 4 also have great laser-damage thresholds that are about 3.0 and 2.3 times that of powdered AgGaS 2 , respectively. The above results indicate that title compounds can be expected as promising IR NLO candidates.

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Section: Introductionmentioning

confidence: 99%

Li2HgMS4 (M = Si, Ge, Sn): New Quaternary Diamond-Like Semiconductors for Infrared Laser Frequency Conversion

Pan

2017

Crystals

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“…N onlinear optical (NLO) materials, which can halve the wavelength of light (or double the frequency) by secondharmonic generation (SHG) process, are of current interest and great importance in laser science and technology [1][2][3] . Over the past decades, continuous intensive studies [4][5][6][7][8][9][10][11] have resulted in the development of various commercial NLO materials, such as b-BaB 2 O 4 (BBO) 12 , LiB 3 O 5 (ref.…”

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confidence: 99%

Beryllium-free Li4Sr(BO3)2 for deep-ultraviolet nonlinear optical applications

et al. 2014

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Nonlinear optical (NLO) materials are of great importance in laser science and technology, as they can expand the wavelength range provided by common laser sources. Few NLO materials, except KBe 2 BO 3 F 2 (KBBF), can practically generate deep-ultraviolet coherent light by direct second-harmonic generation process, limited by the fundamental requirements on the structure-directing optical properties. However, KBBF suffers a strong layering tendency and high toxicity of the containing beryllium, which hinder the commercial availability of KBBF. Here we report a new beryllium-free borate, Li 4 Sr(BO 3 ) 2 , which preserves the structural merits of KBBF, resulting in the desirable optical properties. Furthermore, Li 4 Sr(BO 3 ) 2 mitigates the layering tendency greatly and enhances the efficiency of second-harmonic generation by more than half that of KBBF. These results suggest that Li 4 Sr(BO 3 ) 2 is an attractive candidate for the next generation of deep-ultraviolet NLO materials. This beryllium-free borate represents a new research direction in the development of deep-ultraviolet NLO materials.

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“…Compound 1 has been characterized by XRD studies and it was found to crystallize in a non-centrosymmetric point group (P2 1 ), a pre-requisite for non-linear optical (NLO) activity. The second-harmonic generation (SHG) properties of BBO (b-BaB 2 O 4 ) and LBO (LiB 3 O 5 ) are well-known [15] and the NLO properties of many borate crystals have now been investigated. Many of the structures investigated for SHG properties have been on metal containing borates [16] and relatively few have had non-metal cations as partners [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%