| 激发态分子内质子转移分子2－（2′－羟基苯基）间氮杂氧茚“染料”激光特性的实验和理论研究 |
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| 引用本文： | 尚小明,汤国庆,张桂兰,陈文驹.激发态分子内质子转移分子2－（2′－羟基苯基）间氮杂氧茚“染料”激光特性的实验和理论研究[J].光学学报,1996,16(10):1371-1378. |
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| 作者姓名： | 尚小明 汤国庆 张桂兰 陈文驹 |
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| 作者单位： | 南开大学现代光学研究所 |
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| 基金项目： | 国家自然科学基金,高等学校博士学科点专项科研基金 |
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| 摘 要： | 报道了以Ｎ２激光为泵浦光源，获得激发态分子内质子转移（ＥＳＩＰＴ）分子ＨＢＯ的激光输出现象。其激光转换效率约为１７％，调谐范围为４９５～５４０ｎｍ，最强的输出波长在５１０ｎｍ。以ＨＢＯ的激发态分子内质子转移的光物理和光化学过程为基础，建立了ＨＢＯ产生激光的动态模型，数值模拟了在宽带和窄带情况下激光输出的光谱特性和时间特性，理论计算值与实验观测值很好相符，同时证实了激发态分子内质子转移分子的激光脉冲宽度依赖于激发态分子内质子转移分子的酮式异构体的基态Ｓ′０的寿命
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| 关 键 词： | 激发态分子内质子转移，“染料”激光器，2－（2′－羟基苯基）间氮杂氧茚 |
| 收稿时间： | 1995/8/19 |
Experimental and Theoretic Research on Lasing Properties from 2-(2′-Hydroxyphenyl) Benzoxazole Based on Excited State Intramolecular Proton Transfer |
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| Shang Xiaoming,Tang Guoqing,Zhang Guilan,Chen Wenju.Experimental and Theoretic Research on Lasing Properties from 2-(2′-Hydroxyphenyl) Benzoxazole Based on Excited State Intramolecular Proton Transfer[J].Acta Optica Sinica,1996,16(10):1371-1378. |
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| Authors: | Shang Xiaoming Tang Guoqing Zhang Guilan Chen Wenju |
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| Abstract: | The efficient lasing output from 2 (2′ hydroxyphenyl)benzoxazole(HBO) in cyclohaxane, based on excited state intramolecular proton transfer (ESIPT), is reported. The laser energy conversion efficiency is measured to be about 17%. And the tuning range is 495 nm￣540 nm. By considering the mechanism of ESIPT, we develop a kinetic model of proton transfer laser for HBO to calculate numerically the spectra and instantaneous features of the broad band and narrow band emissions. The calculated results are in agreement with the experiment very well. In addition, the calculated results show that the pulse duration of proton-transfer laser dependents on the ground-state lifetime of keto-tautomer of ESIPT molecule. |
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| Keywords: | excited state intramolecular proton transfer dye laser 2-(2′-hydroxyphenyl) benzoxazole |
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