LD泵浦Nd：YAG946nmCW激光器研究

文章简述了Nd:YAG946nm激光器特别是LD泵浦的Nd:YAG946nm激光器的发展,在国内首次实现了LD泵浦Nd:YAG946nm激光器的连续运转,报道了初步的实验结果并对此进行了详细的分析,提出了改进方案。     

波长1319nm连续Nd:YAG激光器的研究

使用连续Nd：YAG输出1319nm，分析了波长1319nm激光的辐射跃迁能级，论述了抑制1064nm激光的生成从而提高1319nm激光输出等关键技术，研究了光学镜片的镀膜参数与腔型结构，实现1319nm激光连续输出最高功率43W。     

LD抽运高功率连续1319nm Nd:YAG激光器的研究

报道了一台LD侧面泵浦的1319nm Nd：YAG激光器,理论分析了激光器的振荡阈值和最佳透过率,并在腔长15cm,泵浦电流23A,耦合输出镜透过率为8％的条件下,获得1319nm最大连续输出85W。     

LD泵浦的946nm Nd:YAG激光器及腔内倍频473nm蓝光输出

本文偷 准三能级系统９４６ｎｍＮＤ：ＹＡＧ固体激光器室温运转的条件及实现方法,并给出腔内倍频获得４７３ｎｍ蓝光发射的方案,用波长８０８．５ｎｍ,功率２Ｗ的半导体激光器泵浦Ｎｄ：＾ＡＧ,采用腔内插入高损耗元件选模的方法,在室温下获得９４６ｎｍ波长连续红外激光输出１８０ｍＷ,斜效率１３５;用ＢＢＯ和ＬＢＯＪ晶体腔内倍频,获得４７３ｎｍ波长连续蓝色激光,输出功率分别１２ｍＷ和５０ｍＷ,斜效率分别为３％及     

Diode-pumped Nd: YAG/LBO CW yellow laser at 588.9 nm

Inrecentyears,diode pumpedall solid statelasersin blue[1],green[2]andred[3]spectralreginsofintracavity frequencydoublingweredeveloped,becauseoftheirpromisingadvantages,suchasdesignsimplicity,highef ficiency,structurecompactness.Inmedicine,opticaltes ting,andcolordisplaytechnology[4],laserradiationfrom 550nmto650nmisrequired.Inparticular,theyellow laserat588.9nmradiationisveryclosetotheSodium D2atwavelength589nm,thereforeitwillbecomeani dealsourceinsteadofSodiumlamp.Atpresent,thesol id state…     

LD端面泵浦946 nm/473 nm连续Nd:YAG/LBO激光器

对Nd:YAG 946 nm和 473 nm激光器特性进行了实验研究。采用二极管端面泵浦平-平腔实验结构,使用键合Nd:YAG晶体作为激光增益介质,在入射泵浦功率31.8 W时,得到最高11 W的连续波946 nm 激光输出,光-光转换效率34.6%,斜率效率35.4%,光束质量M2达到7.53,半小时内功率不稳定度小于0.4%。采用Ⅰ类临界相位匹配LBO晶体对946 nm激光进行内腔倍频,获得了0.887 W的连续波473 nm蓝光输出,光-光换转效率5.87%。实验结果表明:所设计的端面泵浦连续激光器具有很强的实用价值。     

Diode-pumped actively Q-switched Nd： YAG laser at 946 nm

A diode-pumped Nd： YAG acousto-optically（A-O） Q-switched laser at wavelength 946 nm formed with a simple plane-plane cavity has been demonstrated. The maximum average output power was 850 mW. The highest peak power was 531 W with the pulse repetition rate of 20 kHz and pulse width of 80 ns at the incident pump power of 19.5 W.     

CW laser operation of Nd:YLF

CW laser operation of Nd:YLF is reported for the first time and, in a comparison to Nd:YAG, exhibits a lower threshold and higher single-mode average power. The TEM00mode volume of Nd: YLF was observed to be a factor of four larger than Nd:YAG, resulting in twice the TEM00mode average power. This result is attributed to the substantially lower thermal lensing of YLF with respect to YAG. In comparative measurements the stimulated emission cross section of Nd:YLF was found to be1.8 times 10^{-19}cm²for the π oscillation and1.2 times 10^{-19}cm²for the σ oscillation, as compared to2.4 times 10^{-19}cm²for Nd:YAG. The spectroscopic and lasing parameters of Nd:YLF indicate a potential for this material in high peak and average powerQ-switched applications.     

LD抽运的946nmNd：YAG激光器及其腔内倍频

本文分析了准三能级激光系统的特点，给出了实现946nmNd:YAG激光及其腔内倍频的方案。报导了在2W功率抽运下，通过优化设计，室温下获得490mW的946nm连续红外激光，通过LBO晶体腔内倍频获得了120mW的473nm连续蓝色激光，光光转换效率分别为24.5%及6%。     

连续Nd∶YAG稳频倍频激光器

在连续稳频Nd:YAG激光器的基础上,重新设计了腔形,使用角度匹配的KTP和MgO:LiNbO_3晶体倍频。在输入功率为2.5kW时,获得基频光800mW输出,强度波动小于2％,频率稳定性优于2MHz。同时获得50～100mW的倍频光输出,强度波动小于5％,频率稳定性优于5MHz。     

端面泵浦Nd:YAG连续输出1052nm波长激光器

设计了一个简单紧凑的1052nm波长激光器.首次利用激光二极管（LD）端面泵浦Nd：YAG晶体,使用镀有高度选择性介质膜的反射镜产生该波段的激光.激光阈值为0.3W,当808nm波长泵浦光功率达到18W时产生了3.5W的1052nm波长激光输出.光-光转换效率为20%,输出激光功率波动不超过3%.     

Modeling of end-pumped CW quasi-three-level lasers

A plane wave model has been developed to describe the dynamic behavior of end-pumped CW quasi-three-level lasers. We have derived algebraic equations and analytic expressions from a set of coupled rate equations. The analytic expression predicts that characteristics of a laser are affected not only by the Boltzmann occupation factor of the pump states, but also by that of the laser states. To illustrate the utility of the model, an end-pumped Yb:YAG laser oscillator was investigated and optimized. We have examined the threshold value of the pump beam, pump beam depletion in the gain medium, optimal crystal length, and laser output power for a given pump power. Finally, we have shown the pump and laser intensities and the population of each manifold as a function of crystal length     

二极管侧面泵浦连续固体激光器的研究

本文详细介绍了一个台量大输出功率的37W的二极管侧面泵浦连续固体激光器。并对不同输出功率下的光束质量进行了测量,同时还测量了冷却水温对激光器输出功率的影响。     

准连续660nm Nd:YAG内腔倍频激光器的研究

研制了一台Nd:YAG内腔倍频输出660nm红光激光器。分析了腔长地激光功率的影响，采用新型径向调整式光学镜片调整架，平－平腔结构，腔长390nm，双灯泵浦，KTP晶体内腔倍频，并设置声光Q开关，获得660nm红光输出2W。     

885nm抽运Nd∶YAG激光器

在二极管抽运Nd: YAG激光器中,量子亏损是影响晶体热积累的一个最重要参量,为了达到减少晶体热效应的目的,可采用直接抽运技术.经过理论分析,采用的二极管阵列中心波长为885nm、晶体尺寸为5.5mm×55mm,实验对比验证了多种透过率输出镜.结果表明,在透过率为58%时,获得最大单脉冲138mJ的静态输出,光光转换效率为12%.这一结果验证了采用885nm抽运源直接抽运技术的可行性,并有助于实验的进一步发展.     

Compression of Q-switched and mode-locked CW Nd:YAG laser pulses

Using the optical compression technique with a single-mode optical fiber and a grating pair, the 85 ps pulses from aQ-switched, mode-locked CW Nd:YAG laser have been compressed by a factor of 30. On average, an overall enhancement of 7 × in the peak power was achieved.     

LD端泵浦Nd:YAG946nm激光器优化分析

本文对946nm准三能级激光器进行了理论分析与优化,包括激光晶体的最佳长度、激光器的最佳透射率.通过分析可知,在不同泵浦功率、不同的腔损耗以及不同的模式匹配条件下应选择不同的激光晶体长度,不同的透过率以使激光器的输出功率最高.     

DPSS单频自调Q946nmNd3+,Cr4+:YAG微片激光器

报道了激光二极管泵浦的低阈值自调Q946nmNd3+,Cr4+:YAG微片激光器的实验研究。激光器实现稳定的单频、基横模和偏振输出,输出斜率效率达到22%。946nm激光直接腔外倍频得到473nm蓝光输出,光-光倍频转换效率达到15%。     

波长为1319 nm的连续输出Nd∶YAG激光器的研究

介绍了一种波长为 1319nm的连续Nd∶YAG激光器 ,分析了 1319nm激光的辐射跃迁能级 ,论述了抑制10 6 4nm激光的生成从而提高 1319nm激光输出等关键技术 ,研究了光学镜片的镀膜参数与腔型结构 ,实现了 1319nm最高功率为 4 3W的激光连续输出