【作者】 邹雷；

【导师】 姚建铨；

【作者基本信息】 天津大学 ， 物理电子学， 2007， 博士

【摘要】 可调谐激光器相对于固定波长激光器的优势不言自明,它可以在一套激光系统中实现波长调谐输出,这就增加了激光光源的实用性,降低了使用成本,提高设备的紧凑性。可调谐宽带光源在光通信、光动力学、光计算、环境监测、光学相干层析成像、激光遥感、激光雷达以及光谱学研究等许多重要领域都有着非常广泛的应用。为此,国内外对可调谐激光的研究高度重视,其发展日新月异,成为激光技术领域中最为活跃的课题之一。本论文围绕全固态、可调谐钛宝石激光器实验为基础进行展开,在实现了国内最高功率、调谐范围的指标水平的全固态高功率宽调谐的钛宝石激光器以及双波长钛宝石激光器的基础上,进行了钛宝石激光泵浦垂直外腔面发射激光器(VECSEL)实现近红外可调谐半导体激光光源实验;钛宝石激光器泵浦周期极化晶体实现非线性频率变换OPO输出宽带近红外光的实验;1064nm激光端面泵浦非线性晶体实现中红外波段输出光的实验;而且对利用双波长钛宝石激光器作为光源来差频实现THz光源进行了初步的可行性研究。其中利用钛宝石激光器的增益开关特性泵浦VECSEL和周期极化晶体在国内外尚属首次报道,而1064nm激光端面泵浦非线性晶体获得中红外波段输出光的实验在国内属于首次实现。本文主要进行了以下的研究和实验:1.实现了国内最高功率、最宽调谐范围指标的高功率宽调谐的钛宝石激光器以及双波长钛宝石激光器。2.首次报道了利用泵浦源-钛宝石激光器泵浦VECSEL输出近红外半导体激光的实验。3.首次报道了利用泵浦源-钛宝石激光器泵浦周期极化晶体实现近红外宽带光的光学参量振荡实验。4.在国内首次实现1064nm激光端面泵浦非线性晶体实现连续运转中红外波段的实验。更多还原

【Abstract】 Tunable lasers have their predominant advantages comparing with the fixed wavelength laser- they can output multiple wavelengths in a set of laser system, so as to improve the practicability of laser source, reduce the cost and make the system more compact. Tunable broadband light source has been applied for kinds of important fields, such as optical communication, photodynamic, optical computing, environmental monitoring and surveillance, optical coherence tomography, laser remote sensing technique, laser radar and spectroscopy. So scientists and engineers all over the world are always focusing on the researches in tunable laser. With rapid development, tunable laser technique becomes one of the most active aspects in laser technique.The paper is based on the experiment of all solid state tunable Ti: sapphire laser. After we have achieved the highest power and widest tuning range of all-solid-state Ti: sapphire laser and dual-wavelength Ti: sapphire laser in the domestic fields, we carried out the Ti: sapphire laser pumped vertical external cavity surface emitting laser (VECSEL) to achieve near infrared tunable semiconductor laser; Ti: sapphire laser pumped periodically polarized crystal to achieve broadband near-infrared laser; 1064nm laser end-pumped nonlinear to achieve middle-infrared laser. Meanwhile we studied the feasibility of generating Terra Hertz source by using dual-wavelength Ti: sapphire laser. It is the first time to report the Ti: sapphire laser pumped VECSEL and periodically polarized crystal in this field and the first time to report the 1064nm laser end-pumped nonlinear crystal to achieve the output of middle-infrared continuous wavelength laser in the domestic field.The main achievements in this thesis are shown as below:1. Accomplish the highest power and widest tuning range of the Ti: sapphire laser and dual-wavelength Ti: sapphire laser in the domestic fields.2. First time to report Ti: sapphire laser pumped VECSEL to output near infrared semiconductor laser.3. First time to report Ti: sapphire laser pumped periodically polarized crystal to realize near infrared broadband optical parametric oscillator.4. First time to accomplish 1064nm laser end-pumped nonlinear crystal to output continuous wave middle infrared laser.更多还原