Crystals made of amino acids have remarkable nonlinear and electro-optical characteristics. L-cysteine hydrochloride monohydrate (C₃H₇NO₂·S.HCL·H₂O) lithium sulphate (Li₂SO₄), a new nonlinear optical material belonging to the semi-organic category, was produced for the first time via slow evaporation. L-CHMLS is a monoclinic crystal system, according to X-ray diffraction studies on single crystals. Based on FT-IR and Raman vibrational patterns, L-CHMLS is proven to contain functional groups. Ultra–Visible spectral analysis shows that the crystal exhibits Second Harmonic Generation (SHG) signals at 276 nm due to its reduced cut-off wavelength. The UV absorption curve indicates that the optical band gap is 4.49 eV. The measurement of optical constants using UV-Visible absorbance data, such as extinction coefficient and reflectance, is beneficial to NLO device performance. On grown crystals, luminescence study was conducted, and the maximum emission occurs with good optical transmission over the visible spectrum. Micro hardness and dielectric investigations were used to evaluate the mechanical and dielectric properties of L-CHMLS. By using SEM, we assessed the surface morphology of the crystal as it was grown. Analysing the L-CHMLS crystal with energy dispersive X-rays yielded its chemical composition. To estimate laser damage threshold (LDT), an Nd:YAG laser (1064 nm) was used. The presence of L-CHMLS’s nonlinear optical feature was proven by a second harmonic generation test utilizing a 1064 nm Nd:YAG laser. Z-Scan techniques are used to examine the crystal’s third-order nonlinear optical properties. An excited state absorption or sequential absorption can be observed in this material. In view of its greater nonlinear absorption coefficient (0.54 × 10⁻¹⁰ m/W) and lower onset optical limiting threshold (3.19 × 10¹² W/m²), L-CHMLS is an attractive candidate for optical limiting devices.

由氨基酸制成的晶体具有显着的非线性和电光特性。L-半胱氨酸盐酸盐一水合物 (C ₃ H ₇ NO ₂ ·S.HCL·H ₂ O) 硫酸锂 (Li ₂ SO ₄）是一种属于半有机类的新型非线性光学材料，首次通过缓慢蒸发法制备而成。根据单晶的 X 射线衍射研究，L-CHMLS 是单斜晶系。基于 FT-IR 和拉曼振动模式，L-CHMLS 被证明含有官能团。超可见光谱分析表明，由于截止波长减小，该晶体在 276 nm 处表现出二次谐波产生 (SHG) 信号。紫外吸收曲线表明光学带隙为4.49 eV。使用紫外-可见光吸光度数据测量光学常数，例如消光系数和反射率，有利于非线性光学器件的性能。对生长的晶体进行了发光研究，并且在可见光谱范围内具有良好的光学传输时出现最大发射。使用显微硬度和介电研究来评估 L-CHMLS 的机械和介电性能。通过使用 SEM，我们评估了晶体生长时的表面形态。用能量色散 X 射线分析 L-CHMLS 晶体得出了其化学成分。为了估计激光损伤阈值 (LDT)，使用了 Nd:YAG 激光器 (1064 nm)。L-CHMLS 的非线性光学特性的存在通过使用 1064 nm Nd:YAG 激光器的二次谐波生成测试得到了证明。Z 扫描技术用于检查晶体的三阶非线性光学特性。在该材料中可以观察到激发态吸收或顺序吸收。鉴于其较大的非线性吸收系数（0.54×10 用能量色散 X 射线分析 L-CHMLS 晶体得出了其化学成分。为了估计激光损伤阈值 (LDT)，使用了 Nd:YAG 激光器 (1064 nm)。L-CHMLS 的非线性光学特性的存在通过使用 1064 nm Nd:YAG 激光器的二次谐波生成测试得到了证明。Z 扫描技术用于检查晶体的三阶非线性光学特性。在该材料中可以观察到激发态吸收或顺序吸收。鉴于其较大的非线性吸收系数（0.54×10 用能量色散 X 射线分析 L-CHMLS 晶体得出了其化学成分。为了估计激光损伤阈值 (LDT)，使用了 Nd:YAG 激光器 (1064 nm)。L-CHMLS 的非线性光学特性已通过使用 1064 nm Nd:YAG 激光器的二次谐波生成测试得到证明。Z 扫描技术用于检查晶体的三阶非线性光学特性。在该材料中可以观察到激发态吸收或顺序吸收。鉴于其较大的非线性吸收系数（0.54×10 Z 扫描技术用于检查晶体的三阶非线性光学特性。在该材料中可以观察到激发态吸收或顺序吸收。鉴于其较大的非线性吸收系数（0.54×10 Z 扫描技术用于检查晶体的三阶非线性光学特性。在该材料中可以观察到激发态吸收或顺序吸收。鉴于其较大的非线性吸收系数（0.54×10⁻¹⁰  m/W）和较低的光限幅起始阈值（3.19 × 10 ¹²  W/m ²），L-CHMLS 是光限幅器件的有吸引力的候选者。