Kejian Yang

Summary

Affiliation: Shandong University
Country: China

Publications

  1. ncbi request reprint Compression of pulse duration in a laser-diode, end-pumped, double Q-switched laser
    Kejian Yang
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 44:271-7. 2005
  2. doi request reprint Mode-locking of 2 μm Tm,Ho:YAG laser with GaInAs and GaSb-based SESAMs
    Kejian Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 21:4311-8. 2013
  3. doi request reprint Mode-locked Tm,Ho:YAP laser around 2.1 μm
    K J Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 21:1574-80. 2013
  4. doi request reprint Efficient continuous wave and passively mode-locked Tm-doped crystalline silicate laser
    K J Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 20:18630-5. 2012
  5. ncbi request reprint Diode-pumped passively Q-switched and mode-locked Nd:GdVO4 laser at 1.34 microm with V:YAG saturable absorber
    Kejian Yang
    State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, PR China
    Opt Express 16:20176-85. 2008
  6. doi request reprint Passively mode-locked Tm,Ho:YAG laser at 2 microm based on saturable absorption of intersubband transitions in quantum wells
    Kejian Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 18:6537-44. 2010
  7. doi request reprint Dual-loss-modulated Q-switched and mode-locked YVO(4)/Nd:YVO(4)/KTP green laser with EO and Cr(4+):YAG saturable absorber
    Tao Li
    College of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China
    Opt Express 18:10315-22. 2010
  8. doi request reprint Optimization of the pulse-width of diode-pumped passively Q-switched mode-locked c-cut Nd:GdVO4 laser with a GaAs saturable absorber
    Chao Han
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 50:5970-6. 2011
  9. doi request reprint Numerical simulation of dual-loss-modulated Q-switched and mode-locked laser with an acousto-optic and Cr4+:YAG saturable absorber
    Shengzhi Zhao
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 49:1802-8. 2010
  10. ncbi request reprint Pulse compression in an electro-optic Q-switched diode-pumped YVO4/Nd:YVO4 laser with a Cr4+:YAG saturable absorber
    Tao Li
    School of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China
    Appl Opt 48:2243-8. 2009

Collaborators

Detail Information

Publications16

  1. ncbi request reprint Compression of pulse duration in a laser-diode, end-pumped, double Q-switched laser
    Kejian Yang
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 44:271-7. 2005
    ..In the experiment a laser-diode, end-pumped, double Q-switched Nd:YVO4 laser with both an acousto-optic modulator and GaAs is realized, and the experimental results agree with the numerical solutions...
  2. doi request reprint Mode-locking of 2 μm Tm,Ho:YAG laser with GaInAs and GaSb-based SESAMs
    Kejian Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 21:4311-8. 2013
    ..3 ps at 2091 nm with a maximum output power of 63 mW. We attribute the shorter pulse duration obtained with the GaSb SESAMs to the ultrafast recovery time of the absorption and higher nonlinearity compared to standard GaInAs SESAMs...
  3. doi request reprint Mode-locked Tm,Ho:YAP laser around 2.1 μm
    K J Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 21:1574-80. 2013
    ..4 ps were obtained at 2064.5 nm with a spectral FWHM of 0.5 nm at output powers of 132 mW and a repetition rate around 107 MHz. A maximum output power of 238 mW was obtained at 2130 nm with a pulse duration of 66 ps...
  4. doi request reprint Efficient continuous wave and passively mode-locked Tm-doped crystalline silicate laser
    K J Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 20:18630-5. 2012
    ..2 ps with an average output power of 100 mW are obtained with silicon prisms where used to manage the intracavity dispersion. The shortest pulse duration of about 19.6 ps is obtained with an average output power of 64.5 mW at 1944.3 nm...
  5. ncbi request reprint Diode-pumped passively Q-switched and mode-locked Nd:GdVO4 laser at 1.34 microm with V:YAG saturable absorber
    Kejian Yang
    State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, PR China
    Opt Express 16:20176-85. 2008
    ..With the space-dependent rate equations solved numerically, the theoretical calculations reproduce the laser characteristics well...
  6. doi request reprint Passively mode-locked Tm,Ho:YAG laser at 2 microm based on saturable absorption of intersubband transitions in quantum wells
    Kejian Yang
    Department of Physics and Center of Applied Photonics, University of Konstanz, 78457 Konstanz, Germany
    Opt Express 18:6537-44. 2010
    ..9 W of the absorbed pump power could last for hours without external interruption and a mode-locked pulse with duration of 60 ps at repetition rate of 106.5 MHz was generated...
  7. doi request reprint Dual-loss-modulated Q-switched and mode-locked YVO(4)/Nd:YVO(4)/KTP green laser with EO and Cr(4+):YAG saturable absorber
    Tao Li
    College of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China
    Opt Express 18:10315-22. 2010
    ..1 ns, 360 microJ and 382 kW, respectively, corresponding to the pulse width compression 62%, the pulse energy improvement 10 times and the QML peak power increase 40 times when compared with that of the singly passively QML green laser...
  8. doi request reprint Optimization of the pulse-width of diode-pumped passively Q-switched mode-locked c-cut Nd:GdVO4 laser with a GaAs saturable absorber
    Chao Han
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 50:5970-6. 2011
    ....
  9. doi request reprint Numerical simulation of dual-loss-modulated Q-switched and mode-locked laser with an acousto-optic and Cr4+:YAG saturable absorber
    Shengzhi Zhao
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 49:1802-8. 2010
    ..With this developed model, the dual-loss-modulated QML laser characteristics, such as pulse width and pulse energy, can be numerically simulated, and the theoretical evaluations are in good agreement with the experimental results...
  10. ncbi request reprint Pulse compression in an electro-optic Q-switched diode-pumped YVO4/Nd:YVO4 laser with a Cr4+:YAG saturable absorber
    Tao Li
    School of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China
    Appl Opt 48:2243-8. 2009
    ..The experimental and theoretical results show that the doubly Q-switched laser has the advantages of a shorter pulse width and higher pulse peak power in contrast with a singly Q-switched laser...
  11. ncbi request reprint Diode-pumped passively Q-switched Nd:LuVO4 laser at 1.34 microm with a V3+:YAG saturable absorber
    Fengqin Liu
    School of Physics, Shandong University, Jinan 250100, China
    Opt Express 16:11759-63. 2008
    ..The maximum pulse energy of 17.6 microJ and the highest peak power of 820 W were obtained at pulse width of 21 ns and pulse repetition rate of 22.4 kHz in a-cut Nd:LuVO4 laser...
  12. ncbi request reprint Optimization of doubly Q-switched lasers with both an acousto-optic modulator and a GaAs saturable absorber
    Dechun Li
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 46:6127-35. 2007
    ..Sample calculations for a diode-pumped Nd3+:YVO4 laser with both an AO modulator and a GaAs saturable absorber are presented to demonstrate the use of the curves and the relevant formulas...
  13. ncbi request reprint Optimization of peak power of doubly Q-switched lasers with both an acousto-optic modulator and a Cr4+-doped saturable absorber
    Dechun Li
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 45:5767-76. 2006
    ..The optimal calculations for a diode-pumped Nd(3+):YVO(4) laser with both an AO modulator and a Cr(4+):YAG saturable absorber are presented to demonstrate the use of the curves and the related formulas...
  14. ncbi request reprint Diode-pumped passively Q-switched Nd:YVO4 green laser with a periodically poled KTP and Cr4+:YAG saturable absorber
    Guiqiu Li
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 45:1825-30. 2006
    ..The numerical solutions of the rate equations agree with the experimental results...
  15. ncbi request reprint Control of the pulse width in a diode-pumped passively Q-switched Nd:GdVO4/KTP green laser with a Cr4+:YAG saturable absorber
    Guiqiu Li
    School of Information Science and Engineering, Shandong University, Jinan 250100, China
    Appl Opt 44:5990-5. 2005
    ....
  16. doi request reprint Numerical simulation of low repetition rate subnanosecond laser based on dual-loss-modulation
    Jia Zhao
    School of Information Science and Engineering, Shandong University, Jinan, China
    Appl Opt 52:2773-9. 2013
    ..This means that single mode-locking pulses with low repetition rate, subnanosecond duration, high peak power, and high stability are generated. The simulated results are consistent with the experimental values...