Studies on linear and nonlinear optical properties of 4-N,N-dimethylamino-4′-N′-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate crystal

Bharath, D.; Kalainathan, S.; Anbuselvi, D.

doi:10.1007/s10854-018-9400-x

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…The dispersion of the refractive indices can be described with a Sellmeier equation: Linear electro-optic coefficients of DSTMS: r 111 = 37 ± 3 pm/V at 1900 nm [95] Laser-induced threshold: For 68 fs pulses at 800 nm, a damage threshold of 300 GW/cm 2 (20 mJ/cm 2 ) was measured for DAST, and a slightly lower value was found for DSTMS [210]. Additionally, by using a Nd:YAG laser (1064 nm) with a pulse duration of 10 ns, the laser optical damage threshold of the DSTMS crystal was calculated to be at 3.57 GW/cm 2 [213].…”

Section: Linear and Nonlinear Optical Propertiesmentioning

confidence: 99%

Perspective on Terahertz Applications of Molecular Crystals

et al. 2022

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In this review, we present a survey on the use of molecular nonlinear crystals in the context of terahertz (THz) photonics. The fundamentals of nonlinear optics for converting optical and infrared radiation into THz radiation with the basic theory of femtosecond optical rectification and difference frequency generation are described. Various types of phase-matching conditions that can be achieved in molecular crystals are discussed. It is shown that one of the unique features of molecular crystals is the ability to generate tunable narrowband terahertz radiation using femtosecond lasers. We also provide a detailed description of the most commonly used and promising molecular crystals such as DAST, DSTMS, OH1, HMQ-TMS, DCMBI, and GUHP. This review also presents a description of recent publications which show the prospects of using molecular nonlinear optical crystals in THz photonics.

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Section: Linear and Nonlinear Optical Propertiesmentioning

confidence: 99%

Perspective on Terahertz Applications of Molecular Crystals

et al. 2022

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“…In the past decades, many methods for the growth of desirable DAST single crystals have been reported. For example, Hameed and co-workers added sodium 4-methylbenzenesulfonate (NaTS) into the DAST solution, thus yielding large and NaTS-doped DAST crystals by a slow-cooling method [11,12]. In contrast, Hao et al reported that an appropriate amount of 4-Methylbenzenesulfonic acid (PTSA) additives can improve the stability of the growth solution, where the crystal structure and functional groups of DAST remain unchanged [13].…”

Section: Introductionmentioning

confidence: 99%

Growth of 4-N,N-Dimethylamino-4'-N'-methyl-stilbazolium Tosylate (DAST) Organic Single Crystals Controlled by Oleic Acid

Wen

Zhou

et al. 2019

Crystals

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4-N,N-Dimethylamino-4'-N'-methyl-stilbazolium Tosylate (DAST) organic single crystals controlled by (Z)-Octadec-9-enoic acid (oleic acid, OA) was grown by a slow-cooling method. The as-grown DAST single crystals were systematically characterized by FTIR, X-ray diffraction, second harmonic generation, and UV-vis spectroscopy. Results indicate that addition of OA into the DAST solutions leads to the controlled growth of DAST single crystals and consequently, the crystal quality and optical properties can be modified. Particularly, the DAST crystals grown under the control of OA exhibit larger sizes, higher crystallinities, and better optical qualities with higher optical band gaps and lower defect density, compared with those grown in the absence of OA. These results are helpful for better understanding the controlled growth of DAST organic single crystals and modifying their properties for practical applications.

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