共查询到18条相似文献,搜索用时 109 毫秒
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本文阐述了新型可调谐激光晶体Cr:LiSAF6的光谱特性及灯泵可调谐激光实验的结果,调谐光谱范围770.0-1036.0nm,最大激光输出能量1.17J,斜率效率1.27%;阈值17.6J。 相似文献
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可调谐连续波Cr:LiSAF激光器的研究 总被引:7,自引:0,他引:7
报道了连续波运转的Cr:LiSAF激光器。该器件采用氩离子激光器的488nm谱线泵浦Φ6mm×20mm的Cr:LiSAF晶体,在吸收泵浦功率为900mW时,得到50mW的连续波输出。当在腔内放置色散元件后,其调谐范围是820nm到865nm。 相似文献
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《激光与光电子学进展》1996,(1)
Cr:LiSGAF严生80fs激光脉冲从二极管激光泵浦和克尔透镜锁模的全固态掺铬氟化锂锶镓(Cr:LiSGAF)激光器已产生可调谐飞秒脉冲。虽然以前曾演示过Cr:LISGAF的锁模运转,但这次是用二极管激光泵浦的。初步脉冲持续时间为80fs,可调谐输... 相似文献
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Tunable Cr4+:YSO Q-switched Cr:LiCAF laser 总被引:1,自引:0,他引:1
Tunable passive Q-switching (781 nm to 806 nm at 300 K) of a flash-lamp pumped Cr3+:LiCaAlF6 (Cr:LiCAF) laser with a Cr4+:Y2SiO5 (Cr4+:YSO) broad-band solid-state saturable absorber has been realized. Typical pulse widths of the Q-switched laser output ranged from 40 ns to 80 ns, depending on the lasing wavelength. Spectral narrowing and reduced beam diameter with the use of the saturable absorber were observed. The ground state and the excited state absorption cross sections of the Cr4+:YSO absorber were found by bleaching experiments to be (7.0±1.4)×10-19 cm2 and (2.3±0.5)×10-19 cm2 at 694 nm, respectively. Numerical simulation was utilized to simulate the Cr:LiCAF passive Q-switching with Cr4+ :YSO solid-state saturable absorber 相似文献
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Beaud P. Richardson M.C. Chen Y.-F. Chai B.H.T. 《Quantum Electronics, IEEE Journal of》1994,30(5):1259-1266
Small-signal gain measurements of flashlamp-pumped Cr-doped LiSAF and LiCAF are summarized for a range of material parameters. Flashlamp pumping allows efficient energy storage for both materials in the order 1.6 to 2.6% of the electrical pump energy. Small-signal gain values of up to 0.16 cm-1 are measured for Cr:LiSAF and 0.09 cm-1 for Cr:LiCAF. The gain of both materials is found to be affected by excited state absorption and upconversion. In addition the implications of these results for the design of laser/amplifier systems are discussed 相似文献
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激光诱发荧光用于结肠肿瘤早期诊断 总被引:3,自引:0,他引:3
激光诱导荧光法(LaserInduced Fluorescence LIF)利用生物组织的自体荧光特性判断组织性质,能实时、无损地提供组织信息,从而区分正常与病变组织。本文采用固体可调谐激光器Cr:LiCAF作为激发光源,在360nm ~410nm 波段范围选择多种波长对结肠癌和结肠正常组织标本进行LIF测试,找出了能诱导结肠正常组织与癌变组织产生最大荧光光谱差异的最佳激发波长,并对31 组正常组织与病变组织标本进行测式,结果表明结肠正常组织与癌变组织自体荧光光谱存在明显差异。 相似文献
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Ca4GdO(BO3)3(GdCOB)是一种新型的自倍频晶体。利用氙灯作泵浦源,对单掺的Nd:GdCOB和双掺的Cr:Nd:GdCOB两种自倍频晶体实现了1061nm~530.5nm自由运转的自倍频转换。单掺和双掺晶体的泵浦阈值能量分别为10J和092J,自倍频光的最大输出能量分别为196mJ和246mJ。利用脉冲染料激光作泵浦源,对Nd:GdCOB晶体获得了1331nm基频光和655nm自倍频红光运转,并获得了530.5nm自倍频绿光输出。 相似文献
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掺铈的氟化物Ce:LiCAF和Ce :LiSAF晶体作为两种新的紫外波长 (2 90nm)激光介质 ,具有高的饱和通量 ,宽的带宽。对 2 6 6nm的泵浦光有较强的吸收 ,四倍频的Nd :YAG激光是其理想的泵浦光源 ,为实现全固态的TW级紫外激光系统提供了新的途径。本文回顾了这两种晶体的研究现状以及它的应用 ,设计了一种拟用于紫外激光成丝研究的Ce:LiCAF激光放大器。 相似文献