共查询到19条相似文献,搜索用时 31 毫秒
1.
2.
介绍了当前国际上流行的用半导体可饱和吸收镜来对固体激光器、光纤激光器和半导体激光器进行被动锁模的方法,阐述了半导体可饱和吸收镜用来作为被动锁模吸收体的原理,并介绍了如何利用金属有机气相淀积(MOCVD)技术生长各种波长激光器所需要的半导体可饱和吸收镜。 相似文献
3.
半导体可饱和吸收镜实现高频脉冲激光研究进展 总被引:1,自引:1,他引:0
介绍了作为固体激光器、半导体激光器和光纤激光器被动锁模吸收体的半导体可饱和吸收镜(SESAM)的基本原理和制作方法。详细阐述了利用半导体可饱和吸收镜对同体激光器和光泵垂直外腔面发射半导体激光器进行被动锁模,获得重复率为几吉赫到几百吉赫的超短脉冲激光的方法。 相似文献
4.
5.
6.
7.
利用半导体可饱和吸收镜(SESAM)锁模技术实现的超快脉冲激光器具有结构简单紧凑、脉冲序列稳定等优点,在许多领域有着重要用途。简述了用半导体可饱和吸收镜锁模固体激光器的具体要求及方案,介绍了采用Z型折叠腔结构和大功率侧面抽运模块实现的半导体可饱和吸收镜被动锁模Nd:YAG固体激光器。得到了平均功率为4.7 W,脉冲重复频率55 MHz,单脉冲能量85 nJ的皮秒激光脉冲,光束质量好,M2因子约为1.2,谱线宽度约为0.1 nm,在小时间尺度上得到较好的锁模效果,对实验现象进行了描述,对实现高功率侧面抽运锁模激光器进行了初步探讨。 相似文献
8.
9.
10.
11.
较全面地介绍了几种掺钕激光晶体的光学性质。就掺钕激光晶体主要的三个波长探讨了用一种新型的吸收体(半导体可饱和吸收镜)进行被动调Q和锁模。 相似文献
12.
Grange R. Ostinelli O. Haiml M. Krainer L. Spuhler G.J. Ebnother M. Gini E. Schon S. Keller U. 《Electronics letters》2004,40(22):1414-1416
Self-starting continuous-wave passive modelocking of an Er:Yb:glass laser at 1535 nm is demonstrated with the first antimonide semiconductor saturable absorber mirror (SESAM). The Er:Yb:glass laser produces 20 ps pulses at 61 MHz. This laser was used to characterise the nonlinear optical parameters of the metal organic vapour phase epitaxy grown SESAM. 相似文献
13.
Fully self-starting and passively modelocking of a 1.5 /spl mu/m solid-state laser with a GaInNAs semiconductor saturable absorber mirror (SESAM) has been demonstrated for the first time. A saturation fluence of 20 /spl mu/J/cm/sup 2/, a modulation depth of 0.39% and a fast temporal decay of 18 ps were measured. These well-suited nonlinear optical SESAM parameters allowed for self-starting and passive modelocking of a diode-pumped Er:Yb:glass laser at 1.534 /spl mu/m with a pulse duration of 5 ps at 61 MHz. 相似文献
14.
介绍了半导体可饱和吸收镜锁模光抽运垂直外腔面发射半导体激光器的原理、基本结构特点、应用及设计中的主要问题,对其研究进展及未来发展趋势作了分析和总结。 相似文献
15.
A time-domain simulator for vertical external cavity semiconductor lasers (VECSEL) is described in detail. The core of the model employs a digital filter method to model the optical properties of the active mirror over a wide range of frequencies, temperatures, and carrier densities. The method is also applicable without modifications to the time-domain simulation of semiconductor saturable mirrors (SESAM). As an illustration, ultrashort pulse generation is simulated in two kinds of devices: in a synchronously pumped VECSEL and in a laser passively mode-locked by SESAM. 相似文献
16.
Delfyett P.J. Hong Shi Gee S. Nitta I. Connolly J.C. Alphonse G.A. 《Quantum Electronics, IEEE Journal of》1999,35(4):487-500
Joint time-frequency ultrafast measurements using frequency-resolved optical gating (FROG) have been used to provide a fundamental understanding of: (1) ultrashort pulse propagation in semiconductor optical amplifiers; (2) the modelocking dynamics in external cavity semiconductor diode lasers; and (3) correlated multiple-wavelength generation from mode locked semiconductor lasers. The pulse shaping and chirping effects measured by FROG are shown to be attributed to intracavity gain and saturable absorbing dynamics, as well as group velocity dispersion. In addition, the intracavity gain dynamics show a regime of transient unsaturated gain, which can be exploited to allow phase-correlated multiple-wavelength modelocked operation from a single-stripe external-cavity semiconductor diode laser. In this case, FROG techniques are used to understand the underlying mechanisms involved in the phase correlation process 相似文献
17.
18.
19.
This paper describes a new class of saturable absorber device based on single-wall carbon nanotube (SWNT)-the saturable absorber incorporating nano tube (SAINT). The device possesses ultrafast optical properties comparable to that of the industrial standard semiconductor saturable absorber mirror (SESAM). Passively mode-locked picosecond fiber lasers in different configurations are demonstrated using SAINTs as mode lockers. This is the first demonstration of optical pulsed lasers based on the carbon nanotube technology, and the first practical application of carbon nanotubes in the field of applied optics. 相似文献