Pb17O8Cl18: A Promising IR Nonlinear Optical Material with Large Laser Damage Threshold Synthesized in an Open System

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• 作者：Hui Zhang ; Min Zhang ; Shilie Pan ; Xiaoyu Dong ; Zhihua Yang ; Xueling Hou ; Zheng Wang ; Kelvin B. Chang ; Kenneth R. Poeppelmeier
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：July 8, 2015
• 年：2015
• 卷：137
• 期：26
• 页码：8360-8363
• 全文大小：267K
• ISSN：1520-5126

文摘

Mid-IR nonlinear optical (NLO) materials are of great importance in modern laser frequency conversion technology and optical parametric oscillator processes. However, the commercially available IR NLO crystals (e.g., AgGaQ<sub>2sub> (Q = S, Se) and ZnGeP<sub>2sub>) suffer from two obstacles, low laser damage thresholds (LDTs) and the difficulty of obtaining high-quality crystals, both of which seriously hinder their applications. The introduction of Cl, an element with a large electronegativity, and Pb, a relatively heavy element to promote the optical properties, affords an oxide-based IR NLO material, Pb<sub>17sub>O<sub>8sub>Cl<sub>18sub> (POC). High-quality POC single crystals with sizes of up to 7 mm 脳 2 mm 脳 2 mm have been grown in an open system. Additionally, POC exhibits a large LDT of 408 MW/cm<sup>2sup>, 12.8 times that of AgGaS<sub>2sub>. POC also exhibits an excellent second harmonic generation response: 2 times that of AgGaS<sub>2sub>, the benchmark IR NLO crystal at 2090 nm, and 4 times that of KDP, the standard UV NLO crystal at 1064 nm. Thus, we believe that POC is a promising IR NLO material.