自锁模钛宝石激光器谐振腔特性分析

研究了自锁模钛宝石激光器对谐振腔参数对于自锁模运转的影响，得到了腔的对称性，内腔曲率半径以及总腔长等参数对自锁模运转的影响关系，与实验相符。     

磷酸盐玻璃激光器中的自锁模现象

本文报道了磷酸盐玻璃激光器中的自锁模现象.当泵浦功率密度较高,腔长较长时,自锁模的几率可达100%.对实验结果进行了分析和讨论.     

钛宝石自锁模谐振腔研究

本文用一种新方法研究紧凑三元件钛宝石自锁模谐振腔的特性,讨论晶体长度、凹面镜焦距、谐振腔长对自锁模的影响。获得了谐振腔设计及腔参数优化有用的结论。     

三波长单腔型自锁模飞秒钛宝石激光器

在我们优化的自锁模飞秒钛宝石腔型结构的基础上,实现了一台三波长单腔型自锁模飞秒钛宝石激光器,该台激光二器不仅据我们所知首次实现了三波长飞秒光脉冲的同时运转,而且它还具有可调谐、阈值低、输出功率高及易于调整、结构简单等特点.     

宽带扩展腔产生15飞秒光脉冲实验研究

用３ｍｍ长的钛宝石短棒和改进的非对称Ｚ型折叠腔结构进行自锁模实验，以石英棱镜对作为腔内色散补偿元件，在５Ｗ氩离子激光泵浦下，实现低阈值泵浦自锁模运转。在腔内不加任何调制元件的情况下实现软光阑锁模，获得最短脉冲宽度为１５ｆｓ，光谱宽度为８０ｎｍ，输出平均功率４００ｍＷ。     

CuBr自锁模激光器的实验研究

首次报道在纵向放电的CuBr激光器中,通过抑制高阶横模的振荡,同时得到高度稳定完全调制的绿光和黄光自锁模脉冲串,并在实验上研究了高阶横模,泵浦功率和谐振腔腔长对CuBr激光自锁模脉冲串及其纵模频谱的影响.     

克尔介质自锁模激光器的锁模启动及稳定性理论初探

描述了克尔介质自锁模激光器的锁模工作原理，建立了自锁模系统光强分辨率的概念，并指出了光强分辨率对自锁模系统的锁模启动和工作稳定性起着决定性的作用，通过合理控制克尔介质自锁模激光器的腔镜失谐角，可以提高系统的光强分辨率，从而使自锁模系统易于自锁模启动并提高其自锁模工作的稳定性。     

低抽运三镜腔自锁模掺钛蓝宝石激光器的理论与实验研究

实现了低抽运三镜腔自锁模掺钛蓝宝石激光器的自锁模运转,对该激光器的自锁模区进行了实验研究,并对象散、稳定性、光束参量和克尔自聚焦强度与腔参量的关系进行了系统的理论计算.该计算为自锁模固体激光器的设计和调整提供了理论依据.     

抑制相位噪声实现主动锁模光纤激光器稳定工作

腔长漂移是引起主动锁模光纤激光器不稳定的一个主要原因。通过理论分析得出了主动锁模光纤激光器输出脉冲相位噪声和腔长漂移的关系，并采用抑制相位噪声的方法实现了主动锁模光纤激光器长达８小时的稳定工作。     

低抽运三镜腔自锁模掺钛蓝宝石激光器的理论与实验研究

实现了低抽运三镜腔自锁模掺钛蓝宝石激光器的自锁模运转,对该激光器的自锁模区进行了实验研究,并对象散、稳定性、光束参量和克尔自聚焦强度与腔参量的关系进行了系统的理论计算.该计算为自锁模固体激光器的设计和调整提供了理论依据. 关键词：     

Experimental Study of Double XeCl Laser with a Phase-conjugate Stimulated Scattering Cavity

SupportedbytheNationalNatureScienceFoundationofChina.1.Intr0ducti0nExcimcrlasersareonekindofthemostefficientsourcesofUVcoherentlight.Theyareusedinmanyficldssuchasn2atcrialpr0ccssing[lJ,photolitography['J,laserfusion[3Jetal..Inmany0ftheseapplicationstheshort-x`,avelcngthexcimerlaserswith1aserbeamsofhighqua1ityarenecessary.Mostoftheexci113crlasersi1regcncra11yfedbydischargecircuitswhichpumpthegasvol-umebutcausedischargeinstabiliticsinthedischargevolume['1j.Thislastphenomenonisduetothepresen…     

Asymmetric Fabry-Pérot interferometric cavity for fiber optical sensors

Good linearity and wide dynamic range are the advantages of asymmetric Fabry-Pérot (F-P) interferometric cavity, whose realization has been long for. Based on optical thin film characteristic matrix theory, an asymmetric F-P interferometric cavity with good linearity and wide dynamic range is designed. And by choosing the material of two different thin metallic layers, the asymmetric F-P interferometric cavity is successfully fabricated. The design theory and method of this asymmetric F-P interferometric cavity have been described in detailed. In this paper an asymmetric F-P interferometric cavity used in fiber optical sensor is reported.     

Dye laser multipass amplifier system

A system is described for producing high power, narrow bandwidth pulses by injecting electro-optically a dye laser pulse to a multipass flashlamp pumped amplifier cavity. Pulses of 280 MHz bandwidth have been generated with peak powers of 100 kW at 5 Hz repetition rate. A simple modification allows 300 ns long pulse trains to be obtained with pulse separations determined by the round trip time of the cavity.     

Single mode operation of a narrow bandwidth dye laser using a single prism, grazing incidence grating long cavity

The single mode pulsed dye laser is an attractive tool for many spectroscopic applications. Long cavity tunable dye lasers generally operate in multi-longitudinal modes within the bandwidth of gain profile. Single longitudinal mode oscillation can be obtained by either making the cavity short enough or introducing an additional loss mechanism, in which all modes but one have a gain less than their loss. A new technique to achieve single mode operation in a long cavity dye laser, based on Rhodamine 6G dye in ethanol and ethylene glycol solution, pumped by a high repetition rate copper vapor laser, is reported. This laser, which operates in three modes in grazing incidence grating configuration (cavity length of 16 cm), has been made to lase in single mode by increasing the loss in the resonator through beam walk-off.     

Frequency stabilised grating feedback laser diode for atom cooling applications

The free running linewidth of an external cavity grating feedback diode laser is on the order of a few megahertz and is limited by the mechanical and acoustic vibrations of the external cavity. Such frequency fluctuations can be removed by electronic feedback. We present a hybrid stabilisation technique that uses both a Fabry–Perot confocal cavity and an atomic resonance to achieve excellent short and long term frequency stability. The system has been shown to reduce the laser linewidth of an external cavity diode laser by an order of magnitude to 140 kHz, while limiting frequency excursions to 60 kHz relative to an absolute reference over periods of several hours. The scheme also presents a simple way to frequency offset two lasers many gigahertz apart which should find a use in atom cooling experiments, where hyperfine ground-state frequency separations are often required.     

光纤光栅法布里-珀罗温度传感器的理论分析

通过对弱反射率、长腔长布拉格光纤光栅Fabry-Perot腔(FBG-FP腔)的反射与透射理论分析,得出反射光相位变化与温度变化的关系式,得出了FBG-FP腔中心波长变化与温度变化的关系式,并提出了一种有效的实验解调方法,该方法通过对绝对相位的检测,得出温度的变化量。     

用阈值表达式研究长外腔半导体激光器的双稳特征

利用外腔半导体激光器（ＥＣＬＤ）在不同频率振荡所需的阈值载流子密度的表达式及相关的折射率表达式他它的双稳特性,由此导出了在外腔半导体激光器的ｐ－ｖ（功率－频率）曲线上出现双稳的条件以及双稳环宽度的解析表达式。     

外腔半导体激光器中激光二极管端面反射率的谱特性分析

考虑到端面反射率与波长有关 ,且带宽有限的实验事实 ,以及增益谱随载流子密度变化的因素 ,着重分析了激光二极管 (L D)镀膜端面反射率带宽、极小波长位置参量对光栅外腔激光器 (ECL D)调谐范围的影响。分析表明 ,除了 L D镀膜端面剩余反射率值、外腔反馈效率等因素之外 ,增大反射率带宽、精确控制极小波长位置是进一步挖掘 ECL D调谐范围的有效措施。增大反射率带宽 ,可更有效地提高参考载流子密度 ,延伸长波长端调谐区域 ,抑制 F- P腔影响。在确定的条件下 ,优化后的极小波长位置对应于调谐范围的极大值。理论分析结果较好地解释了实验现象     

Semiconductor optical amplifier-based laser with 25 km long cavity length utilizing sagnac fiber ring structure

In the investigation, we propose and demonstrate a Sagnac ring based fiber laser structure using a semiconductor optical amplifier (SOA) to act as a gain medium with short to long fiber cavity lengths for wavelength lasing and tuning. Here, ten fiber Bragg gratings (FBGs) with different reflected Bragg wave-lengths are used serving as the reflected element in the proposed laser configuration for wavelength lasing and remote sensing simultaneously. Furthermore, the different cavity fiber lengths of a few ten m to 25 km, which are used in the proposed laser scheme, has been analyzed and discussed.