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Publications (10)23.82 Total impact

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    ABSTRACT: Efficient and compact blue laser output at 468 nm is generated by intracavity frequency doubling of a continuouswave (CW) diode-pumped Nd:CNGG laser at 935 nm. With 17.8 W of diode pump power and the frequency-doubling crystal BiB3O6 (BiBO), a maximum output power of 490 mW in the blue spectral range at 468 nm has been achieved, corresponding to an optical-to-optical conversion efficiency of 2.8%; the output power stability over 4 h is better than 2.6%. To the best of our knowledge, this is first work on intracavity frequency doubling of a diode pumped Nd:CNGG laser at 935 nm. (© 2011 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA) (© 2011 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)
    Laser Physics Letters 12/2010; 8(2):103 - 106. · 2.96 Impact Factor
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    ABSTRACT: We report a high-efficiency Nd:LuVO4 laser operating at 1066 and 1343 nm, respectively, direct pumped by a diode laser at 880 nm. The maximum outputs of 10.5 and 7.0 W, at 1066 and 1343 nm, respectively, are obtained in a 8-mm-thick 0.4 at.% Nd:LuVO4 crystal with 16.9 W of absorbed pump power at 880 nm, leading to a high slope efficiency with respect to the absorbed pump power of 64.4 and 44.5%. Under traditional pumping at 809 nm, the maximum outputs of 9.8 and 6.2 W, at 1066 and 1343 nm respectively, are obtained with 19.3 W of absorbed pump power, corresponding to the slope efficiency with respect to the absorbed pump power of 54.9 and 34.9%. (© 2010 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)
    Laser Physics Letters 07/2010; 7(10):699 - 702. · 2.96 Impact Factor
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    ABSTRACT: We report a diode-pumped Nd:YVO4 laser emitting at 880 nm based on the 4F3/2 – 4I9/2 transition for the first time. A power of 1.13 W at 880 nm has been achieved in continuous-wave operation with a fiber-coupled laser diode emitting 28.6 W at 808 nm. Furthermore, intracavity secondharmonic generation in continuous-wave mode has also been demonstrated with a power of 233 mW at 440 nm by using a BiB3O6 (BiBO) nonlinear crystal. The fluctuation of the blue output power was better than 2.3%. The beam quality M2 value is 1.2. (© 2010 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)
    Laser Physics Letters 06/2010; 7(7):495 - 497. · 2.96 Impact Factor
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    ABSTRACT: We present for the first time laser architecture to obtain continuous-wave yellow radiation at 594 nm. The choice of crystals (Nd:LuVO4 for emission at 1343 nm and Nd:YAG for emission at 1064 nm) was guided by laser performance. A part of the pump power was then absorbed by the Nd:LuVO4 crystal, the remaining was used to pump the Nd:YAG crystal. Intracavity sum-frequency mixing at 1343 and 1064 nm was realized in a KTiOPO4 (KTP) crystal to reach the yellow radiation. We obtained a continuous-wave output power of 312 mW at 594 nm with a pump laser diode emitting 18.4Wat 808 nm. (© 2010 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)
    Laser Physics Letters 06/2010; 7(9):634 - 636. · 2.96 Impact Factor
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    ABSTRACT: We report for the first time a coherent ultraviolet radiation at 336 nm by intracavity sum-frequency generation of a 912 nm Nd:GdVO4 laser and a 532 nm frequency doubling Nd:YVO4 laser. The ultraviolet laser is obtained by using a doubly resonator, type-I critical phase matching CsLiB6O10 (CLBO) crystal sum-frequency mixing. With a total diode pump power of 31.8 W (13.1 W pump power for 912 nm Nd:GdVO4 laser and 18.7 W pump power for 532 nm Nd:YVO4 frequency doubling laser), TEM00 mode ultraviolet laser at 336 nm of 93 mW is obtained. The power stability is better than 3.4% and laser beam quality M2 factors are 1.52 and 1.27 in both horizontal and vertical dimensions respectively. (© 2010 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)
    Laser Physics Letters 05/2010; 7(8):560 - 562. · 2.96 Impact Factor
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    ABSTRACT: We report a diode-pumped Nd:YAG laser emitting at 899 nm based on the 4F3/2 – 4I9/2 transition. A power of 1.04 W at 899 nm has been achieved in continuous-wave operation with a fiber-coupled laser diode emitting 19.2 W at 809 nm. Furthermore, intracavity second-harmonic generation in continuous-wave mode has also been demonstrated with a power of 284 mW at 449.5 nm by using a BiB3O6 (BiBO) nonlinear crystal. The fluctuation of the blue output power was better than 2.8%. The beam quality M2 value is 1.3. (© 2010 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)
    Laser Physics Letters 03/2010; 7(5):347 - 350. · 2.96 Impact Factor
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    ABSTRACT: We report efficient laser emission on the 914 nm 4 F 3/2 to 4 I 9/2 transition in Nd:YVO4 under the pump with diode lasers at 888 nm for the first time. Continuous wave 6.57 W output power at 914 nm is obtained from a V-type resonator under 18.3 W of absorbed pump power; the slope efficiency with respect to the absorbed pump power was 60.6%. Moreover, intracavity frequency doubling with BiB3O6 (BiBO) nonlinear crystal yielded 1.77 W of deep-blue light at 457 nm with beam quality characterized by an M2 factor of 1.25.
    Laser Physics 01/2010; 20(10):1877-1880. · 1.03 Impact Factor
  • Laser Physics Letters 01/2010; 7(10). · 2.96 Impact Factor
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    ABSTRACT: We present for the first time a dual-wavelength laser operation at 1064 and 914 nm in two NdYVO4 crystals. A 879 nm laser diode is used to pump the first Nd:YVO4 crystal emitting at 914 nm, and the second Nd:YVO4 laser emitting at 1064 nm intracavity pumped at 914 nm. A total output power of 4.28 W at the two fundamental wavelengths was achieved at the absorbed pump power of 13.8 W. The M2 values for 914 and 1064 nm lights at the maximum output power were found to be around 1.3 and 1.1, respectively.
    Laser Physics 01/2010; 20(4):737-739. · 1.03 Impact Factor
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    ABSTRACT: We present for the first time a Nd:YVO4 laser emitting at 1064 nm intracavity pumped by a 916 nm diode-pumped Nd:LuVO4 laser. A 809 nm laser diode is used to pump the Nd:LuVO4 crystal emitting at 916 nm, a Nd:YVO4 laser crystal was pumped at 916 nm and lased at 1064 nm. Intracavity sum-frequency mixing at 916 and 1064 nm was then realized in a LiB3O6 (LBO) crystal to reach the blue range. We obtained a continuous-wave output power of 216 mW at 492 nm under 19.6 W of incident pump power at 809 nm.
    Laser Physics 01/2010; 20(9):1810-1813. · 1.03 Impact Factor