Intracavity Frequency Doubling of a New Low－threshold High－efficiency Crystal Nd：Sr_5（VO_4）_3F

ＩｎｔｒａｃａｖｉｔｙＦｒｅｑｕｅｎｃｙＤｏｕｂｌｉｎｇｏｆａＮｅｗＬｏｗ－ｔｈｒｅｓｈｏｌｄＨｉｇｈ－ｅｆｆｉｃｉｅｎｃｙＣｒｙｓｔａｌＮｄ：Ｓｒ＿５（ＶＯ＿４）＿３ＦＺＨＡＯＳｈｅｎｇｚｈｉ；ＷＡＮＧＱｉｎｇｐｕ；ＺＨＡＮＧＸｉｎｇｙｕ；ＷＡＮＧ...     

3-methyl-4-metroxy-4'-nitrostilbene (MMONS) Crystal Growth and Studies of It

３－ｍｅｔｈｙｌ－４－ｍｅｔｒｏｘｙ－４＇－ｎｉｔｒｏｓｔｉｌｂｅｎｅ（ＭＭＯＮＳ）ＣｒｙｓｔａｌＧｒｏｗｔｈａｎｄＳｔｕｄｉｅｓｏｆＩｔｓＳｅｃｏｎｄＮｏｎｌｉｎｅａｒＯｐｔｉｃａｌＰｒｏｐｅｒｔｉｅｓ￥ＣＡＯＹａｎｇ；ＺＨＵＺｈｉｄｏｎｇ；ＨＵＡ...     

Wavelength-Flattened 1×3 Single-Mode Fibre-Optical Splitters

Ｗａｖｅｌｅｎｇｔｈ－Ｆｌａｔｔｅｎｅｄ１×３Ｓｉｎｇｌｅ－ＭｏｄｅＦｉｂｒｅ－ＯｐｔｉｃａｌＳｐｌｉｔｔｅｒｓ￥ＨＵＡＮＧＹｏｎｇ；ＺＥＮＧＱｉｎｇｊｉ（ＰｈｏｔｏｎｉｃＴｅｃｈｎｏｌｏｇｙＬａｂｏｒａｔｏｒｙ，ＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃａｌ...     

Diode-Pumped Monolithic Nd:LMA Laser

Ｄｉｏｄｅ－ＰｕｍｐｅｄＭｏｎｏｌｉｔｈｉｃＮｄ：ＬＭＡＬａｓｅｒ￥ＬＵＪｉａｎｇ；ＨＵＡＮＧＺｈａｏｍｉｎｇ；ＪＩＮＺｈｅｎｈｏｎｇ；ＷＡＮＧＹａｎｇｊｕｎ（ＯｐｔｉｃａｌＦｉｂｅｒＩｎｓｔｉｔｕｔｅ，，ＳｈａｎｇｈａｉＵｎｉｖｅｒｓｉｔｙｏｆＳｃ...     

MEASUREMENTS OF Fe AND Cu K-Shell IONIZATION CROSS SECTIONS BY SLOW ELECTRON IMPACT

ＭＥＡＳＵＲＥＭＥＮＴＳＯＦＦｅＡＮＤＣｕＫ－ＳｈｅｌＩＯＮＩＺＡＴＩＯＮＣＲＯＳＳＳＥＣＴＩＯＮＳＢＹＳＬＯＷＥＬＥＣＴＲＯＮＩＭＰＡＣＴＬｉＴａｉｈｕａＡｎＺｈｕＬｕｏＺｈｅｎｇｍｉｎｇＣｅｎｔｅｒｆｏｒＲａｄｉａｔｉｏｎＰｈｙｓｉｃｓ，Ｉｎｓ...     

Generation of 2－10ns Excimer Laser Pulse by Optical Synchronizing Wave－clipping

Ｇｅｎｅｒａｔｉｏｎｏｆ２－１０ｎｓＥｘｃｉｍｅｒＬａｓｅｒＰｕｌｓｅｂｙＯｐｔｉｃａｌＳｙｎｃｈｒｏｎｉｚｉｎｇＷａｖｅ－ｃｌｉｐｐｉｎｇＸＩＡＮＧＳｈｉｑｉｎｇ；ＬＯＵＱｉｈｏｎｇ；ＤＯＮＧＪｉｎｇｘｉｎｇ；ＭＡＮＧＹａｎｐｉｎｇ；ＷＥＩＹｕｎｒ...     

2001年国际会议预告

ＪａｎｕａｒｙＪａｎ６—１１ＡＡＰＴａｎｄＡＡＳＪｏｉｎｔＷｉｎｔｅｒＭｔｇＳａｎＤｉｅｇｏ,ＣＡＣｏｎｔａｃｔ：ＡＡＰＴｏｒＡＡＳＦｅｂｒｕａｒｙＦｅｂ１２—１４ＰｈｏｔｏｎｉｃｓＷｅｓｔＳａｎＪｏｓｅ,ＣＡＣｏｎｔａｃｔ：ＳＰＩＥＦｅｂ１８—２３ＯｐｔＦｉｂｃｒＣｏｍｍｕｎｉｃａｔｉｏｎＣｏｎｆ（ＯＣＦ２００１）ＳａｎＦｒａｎｃｉｓｃｏ,ＣＡＣｏｎｔａｃｔ：ＯＳＡＭａｒｃｈＭａｒ１２—１６ＡＰＳＭａｒｃｈＭｔｇＳｅａｔｔｌｅ,ＷＡＣｏｎｔａｃｔ：ＡＰＳＡｐｒｉｌＡｐｒ１７—１９ＭＲＳＳｐｒｉ…     

Study of the Frog-legs Phase Conjugator in BaTiO_3

Ｓｔｕｄｙ　ｏｆ　ｔｈｅ　Ｆｒｏｇ－ｌｅｇｓ　Ｐｈａｓｅ　Ｃｏｎｊｕｇａｔｏｒ　ｉｎ　ＢａＴｉＯ_３ＳｔｕｄｙｏｆｔｈｅＦｒｏｇ－ｌｅｇｓＰｈａｓｅＣｏｎｊｕｇａｔｏｒｉｎＢａＴｉＯ_３￥ＷＡＮＧＬｉｊｕｎ；ＷＡＮＧＪｉａｙｏｕ；ＧＵＯＳｉｊｉ（Ｄｅｐ...     

Effect of OH－ on Fluorescence Lifetime and Laser Performance of Er~（3＋） Glass

ＥｆｆｅｃｔｏｆＯＨ－ｏｎＦｌｕｏｒｅｓｃｅｎｃｅＬｉｆｅｔｉｍｅａｎｄＬａｓｅｒＰｅｒｆｏｒｍａｎｃｅｏｆＥｒ~（３＋）Ｇｌａｓｓ￥（ＡｌｓｏｗｉｔｈＳｈａｎｇｈａｉｉｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓａｎｄＦｉｎｅＭｅｃｈａｎｉｃｓ，Ａｃａｄｅｍｉ?..     

Self-programming Optical Logic Processor by using the PROM Device

Ｓｅｌｆ－ｐｒｏｇｒａｍｍｉｎｇＯｐｔｉｃａｌＬｏｇｉｃＰｒｏｃｅｓｓｏｒｂｙｕｓｉｎｇｔｈｅＰＲＯＭＤｅｖｉｃｅ￥ＷＡＮＧＢｉｎｑｕａｎ；ＬＩＵＬｉｒｅｎ；ＰＥＮＧＨａｉｆｅｎｇ；ＬＩＡＮＧＦｅｎｇ（ＩｎｆｏｒｍａｔｉｏｎＯｐｔｉｃｓＬａｂｏｒａｔ...     

Diode-pumped Q-switched Nd:YLF laser at 1313 nm

In this letter, we describe the operation of an end-pumped acousto-optic Q-switched Nd:YLF laser. According to the theoretical analysis and calculation for Nd:YLF crystal, the thermal focal length of σ-polarized laser is positive in plane-parallel resonator, while that of π-polarized laser is negative. Hence laser operation at σ-polarized 1313 nm should be stable in plane-parallel cavity. When absorbed pump power is 12.45 W and the pulse repetition frequency is 10 kHz, 3.1 W output laser at 1313 nm is achieved. As a result, the optical–optical conversion efficiency is 25.4 % and slope efficiency is 31.2 %, respectively.     

半整块外腔谐振倍频稳频MgO：LiNbO3激光器

报道了,用高功率LD泵浦的全固化单频稳频Nd:YVO4激光器作为泵浦源的外腔谐振倍频绿光激光器,倍频腔采用半整块腔型,倍频晶体为MgO:LiNbO3,当倍频腔前的基频光功率为1W时,得到最高绿光输出为500mW,倍频转换效率为50％,在锁定情况下,倍频腔的功率波动小于2％,频率稳定性优于500KHz。     

The nature of the vectorial photoelectric effect in the threshold energy region

Summary An immediate correlation has been proved to exist between the vectorial photoelectric effect and electronic surface structure modified due to adsorption. Experimental studies were performed for Cs overlayers on W(110) and Si(111) faces using visible exciting photons with energies below those of both bulk and surface plasmons. Considerable (more than 20 fold) growth of the effect was observed forp-polarized light in the vicinity of threshold as the light frequency approached the position of the maximum of local density in the surface-state band. A special case of the vectorial photoelectric effect forp-polarized light has been found in the absence of bulk photoemission excited bys-polarized light. Our results prove that the anomalous vectorial photoelectric effect is caused by the normal electric vector component of thep-polarized light under appropriate conditions for the particular photoemission enhancement on the surface. The effect can be related to optical absorption by the surface-state band and to subsequent electron emission into the vacuum, the normal electric vector component of thep-polarized light being essential for both processes.     

High Power All-Solid-State Nd: YVO_4 laser and its intracavity SHG

Ｈｉｇｈ　Ｐｏｗｅｒ　Ａｌｌ－Ｓｏｌｉｄ－Ｓｔａｔｅ　Ｎｄ：ＹＶＯ＿４　ｌａｓｅｒ　ａｎｄ　ｉｔｓ　ｉｎｔｒａｃａｖｉｔｙ　ＳＨＧＨｉｇｈＰｏｗｅｒＡｌｌ－Ｓｏｌｉｄ－ＳｔａｔｅＮｄ：ＹＶＯ＿４ｌａｓｅｒａｎｄｉｔｓｉｎｔｒａｃａｖｉｔｙＳＨＧ￥ＺＨ...     

LD抽运的Nd:YAG陶瓷/KTP绿光激光器

报道了一种LD端面抽运Nd:YAG陶瓷、KTP腔内倍频的全固态连续波绿光激光器.当抽运功率为21.6 W时,1064 nm基频输出达到11.3 W,光—光转换效率为52.3%.采用Ⅱ类切割的KTP晶体作为腔内倍频介质,在直腔结构下获得了最大功率为1.86 W的532　nm绿光输出,光—光转换效率为7%.输出光斑具有高斯型强度分布,1 W输出时的M²因子约为1.7. 关键词： 全固态绿光激光器 Nd:YAG陶瓷 KTP倍频 直腔     

Generation of harmonics of femtosecond radiation from the surface of aluminum targets

The results of a study of the generation of harmonics from a laser plasma resulting from the interaction of radiation of femtosecond duration (λ=1.06 μm, t=475 fs, and I～2×10¹⁷ W cm^?2) with aluminum targets are presented. The observed frequency shift of harmonics to the short-wavelength region (1.6 and 5.1 nm for the second and fifth harmonics, respectively) is determined by a collisionless absorption resulting from an anomalous skin effect. The efficiencies of conversion into the second and fifth harmonics in an s-polarized pumping field were lower than the conversion efficiencies in a p-polarized pumping field by a factor of eight and a factor of two, respectively (for intensities I<10¹⁷ W cm^?2). With a further increase in the pumping intensity, these values decreased to 0.8 and 0.5, respectively. The mechanisms of such behavior of the conversion process are considered.     

Additive-pulse mode locking of a diode-pumped Nd3+:YVO4 laser

We demonstrate self-starting additive-pulse mode locking of a diode-pumped Nd³⁺:YVO₄ laser. Pulse durations of 2.7 ps are measured at a repetition frequency of 90.7 MHz and at an average output power of 1.1 W. This corresponds to a peak power of 4.5 kW. Received: 27 June 2001 / Revised version: 10 October 2001 / Published online: 29 November 2001     

Intracavity frequency-doubled diode-pumped Nd : LaSc3(BO3)4 lasers

 An intracavity frequency-doubled 10%Nd : LaSc₃(BO₃)₄ (Nd : LSB) laser was investigated in different resonator configurations and in different operation modes under continuous wave (cw) and quasi-cw laser-diode pumping. With a Cr⁴⁺ : YAG passive modulator and a KTP crystal the second-harmonic output power at 531 nm amounted to 190 mW in Q-switched TEM₀₀ mode at 750 mW of pump power. In a sandwich resonator, when all the optical elements were in direct contact with each other, 0.8 W of green output power was obtained in cw mode under 2.7 W of pump power with a slope efficiency of 44%. In the same setup under fiber-coupled diode-laser array pumping (5.6 W of incident power), 1.2 W of green output power was achieved in cw mode and 1.4 W in quasi-cw mode. Received: 30 April 1996/Revised version: 1 July 1996     

Nd:YAG陶瓷与单晶4F3/2–4I13/2跃迁的弱谱线多波长激光性能对比

报道了基于半导体激光端面抽运Nd:YAG的⁴F_3/2–⁴I_13/2 跃迁的弱谱线多波长激光输出. 实验对比了透明陶瓷与单晶材料的激光输出特性, 表明透明陶瓷和单晶材料荧光谱强度的略微差异, 导致了多波长输出时相同两个波长之间的激光强度比在两种材料中的差异. 基于两种耦合输出镜片, 激光阈值都在2 W左右. 在13.5 W的抽运功率下, 基于Nd:YAG透明陶瓷获得了输出功率4.05 W、强度比1 :2的1338与1356 nm双波长激光和输出功率3.65 W、强度比13 : 1的1356与1414 nm 双波长激光, 斜率效率分别达33.9% 和31.9%.     

New green self-frequency-doubling diode-pumped Nd:Ca4GdO(BO3)3 laser

3+ :Ca₄GdO(BO₃)₃ (Nd:GdCOB). 21 mW of green cw laser emission for an absorbed pump power of 820 mW were achieved under laser diode-pumping. 64 mW of green cw laser output were obtained with 1 W of absorbed pump power under titanium-sapphire pumping. Its availability in large-size crystals with good optical quality makes Nd:GdCOB a true challenger to the best SFD laser crystal reported so far: Nd:YAl₃(BO₃)₄ (Nd:YAB or NYAB). Received: 2 March 1998/Revised version: 20 May 1998