||Compact, high-repetition-rate pulsed visible coherent light sources are attractive for many applications, such as biomedicine, remote sensing, astronomy, and displays. The Q-switched all-solid-state laser technique can be a promising approach to attain such light sources. Moreover, due to the high nonlinearity and highly engineerable characteristics of the quasi-phase-matching(QPM) material, a device as simultaneous a Q-switch and wavelength converter can be realized in a two-dimensional aperiodically poled lithium niobate (APPLN).|
In this thesis, we have designed and fabricated a unique 2D APPLN device integrating the functionalities of the Q-switch for two laser lines(1064nm and 1342 nm) simultaneously and sum frequency generator in a Nd:YVO4 laser system to generate pulsed yellow-orange laser, the such device was designed by aperiodic optical superlattice(AOS) technique and optimized by simulated annealing(SA) method.
In operation, 350 volts at repetition rate of 1 KHz drove the device, while the diffraction efficiencies of 1064 nm and 1342 nm of 60 % and 55 % were measured, respectively. At diode pump power of 5.7 watts, a yellow-orange pulse with pulse width of 8.4 ns, bandwidth of 0.4 nm, and peak power of 512 can be obtained, meanwhile, the peak-to-peak fluctuation of 8.9% was also found.
||[1.1] “Physics Today”, Oct. 2007.|
[1.2] J. A. Giordmaine, “Mixing of light beam in crystal”, Phys. Rev. Lett. 8, 1962.
[1.3] W. H. Zachariasen, Skr. Norske Vid-Ada., Oslo,Mat.Naturv, No.4, 1928.
[1.4] B. T. Matthias and J. P. Remeika, “Ferroelectricity in the illmenite structure”, Phys. Rev. 76, 1886.
[1.5] A. A. Ballman, “Growth of piezoelectric and ferroelectric materials by the Czochralski technique”, J.American Ceram. Soc. 48, 1965.
[1.6] 胡明理, “Zn:LiNbO3之晶體生長與其特性研究”, 中央大學, 2004.
[1.7] J. F. Huang, “Double-prism domain PPLN for simultaneous laser Q-switching and optical parametric oscillation in a Nd:YVO4 laser.”, Optics Express, Vol. 21, Issue 25, 2013.
[1.8] Y. H. Chen, “Tunable, pulsed multiline intracavity optical parametric oscillator using two-dimensional MgO:periodically poled lithium niobate-aperiodically poled lithium niobate”, Optics Letters, Vol. 38, Issue 18, 2013.
[1.10] Copper vapor laser.
[1.11] Dye laser. 取自http://en.wikipedia.org/wiki/Dye_laser
[1.12] Jirí Janousek, Sandra Johansson, Peter Tidemand-Lichtenberg, Shunhua Wang, Jesper L. Mortensen, Preben Buchhave and Fredrik Laurell, “Efficient all solid-state continuous-wave yellow-orange light source ” ,Optics Express, 13, 2005.
[1.13] K.W. Su, Y.T. Chang, Y.F. Chen, “Power scale-up of the diode-pumped actively Q-switched Nd:YVO4 Raman laser with an undoped YVO4 crystal as a Raman shifter”, Appl. Phys. B 88, 2007.
[1.14] Yung-Fu Chen, S. W. Tsai, “Diode-pumped Q-switched Nd:YVO4 yellow laser with intracavity sum-frequency mixing”, OPTICS LETTERS. Vol. 27, No.6, March 15, 2002.
[1.15] George A. Henderson, “A computational model of a dual-wavelength solid-state laser”, J. Appl. Phys. 68(11), 1990.
[1.16] W. K. Chang, Y. H. Chen, and J. W. Chang, “Pulsed orange generation optimized in a diode-pumped Nd:YVO4 laser using monolithic dual PPLN electro-optic Q switches”, OPTICS LETTERS. Vol. 35, No. 16, August 15, 2010.
[1.17] J. W. Chang, Q. H. Tseng, W. K. Chang, N. Hsu, Yen-Hung Chen, “APPLN Electro-Optic Bragg Q-switch in a Dual-Wavelength Nd:YVO4 Laser for Pulsed Orange Generation”, CLEO Technical Digest, 2012.
[2.1] Dieter H. Jundt, “Temperature-dependent Sellmeier Equation for the Index of Refraction, ne, in Congruent Lithium Niobate.”, Optics Letters, Vol. 22, No. 20, 1997.
[2.2] J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, “Interactions between light waves in a nonlinear dielectric.”, Physical Review, Vol. 127, 1962.
[3.1] N. Metropolis, A. W. Rosenbluth, M. N. Rosenbluth, A. H. Teller, and
E. Teller, “Equation of State Calculation by Fast Computing Machines.”, Journal of Chemical Physics, 21(6), 1953.
[3.2] Y. Y. Lin, S. T. Lin, G. W. Chang, A. C. Chiang, and Y. C. Huang, Y. H. Chen “Electro-optic periodically poled lithium niobate Bragg modulator as a laser Q-switch.”, OPTICS LETTERS. Vol. 32, No. 5, March 1, 2007.
[4.1] Toshiyuki Inoue and Toshiaki Suhara, “Electro-optic periodically poled lithium niobate Bragg modulator as a laser Q-switch.”, IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 23, NO. 17, SEPTEMBER 1, 2011.