摘要(英) |
Abstract
Optical parametric oscillators (OPOs) can produce wavelength tunable coherent light sources and have been widely used in various applications including the remote sensing, spectroscopy, nonlinear optics, range finder, optical communications, and bio-medicine.
Several high-efficiency intracavity wavelength converters have been developed via the use of a nonlinear crystal in an acousto-optic or electro-optic (EO) Q-switched solid-state laser. However, a more compact integrated system performing the same device functions is still rare.
In this thesis, we have devoted to integrate two device functions in a monolithic LiNbO3 crystal. These two devices are an EO Bragg deflector and an optical parametric generator (OPG). A 2D periodically poled lithium niobate (PPLN) crystal has been designed and fabricated in this work to simultaneously satisfy the phase-matching conditions required for functioning the two devices. We further inserted this 2D PPLN crystal in a Nd:YVO4 laser system to simultaneously function as a laser Q switch and an intracavity optical parametric amplifier.
We have performed an intracavity OPG (IOPG) and an intracavity OPO (IOPO) experiments using the fabricated 2D PPLN in a diode-pumped Nd:YVO4 laser system. During the experiments, a line OPG emission source has been observed in such a light source, which is exactly the signature with a 2D QPM wavelength converter. The diode pump threshold (<4 W), output peak power (~7 W), and output spectral bandwidth (~0.73 nm) of the measured OPO signals have been reduced by a factor of 1.4, enhanced by 5 folds, and narrowed by a factor of 7.3 in comparison with those measured from the OPG signal, respectively. Finally we also proposed in this thesis advanced laser schemes to further enhance the overall system efficiency.
|
參考文獻 |
[1.1] Physics Today, pp.72 Oct. 2007
[1.2] W. H. Zachariasen,Skr. Norske Vid-Ada.,Oslo,Mat.
Naturv. No.4 (1928)
[1.3] 主動式多通道窄頻寬通Ti:PPLN 波導濾波及,黃俊育
模態轉換器之研究
[1.4] Junji Hirohashi“Characterization of domain switching and
optical damage properties in ferroelectrics,”Chap 3.
[1.5]Armstrong J. A., Bloembergen N., Ducuing J. and Pershan P. S., Phys. Rev., 127(1962) 1918.
[1.6] V. Berger, “Nonlinear photonic crystals”, Phys. Rev. Lett. 81, No. 19, 4136-4139 (1998).
[1.7] Broderick N. G. R., Ross G. W., Offerhaus H. L.,Richardson D. J. and Hanna D. C.,Opt. Lett., 84 (2000) 4345.
[1.8] Ni P. G., Ma B. Q., Wang X. H., Cheng B. Y. and Zhang D. Z., Appl. Phys. Lett., 82 (2003) 4230.
[1.9] IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 10, NO. 5, SEPTEMBER/OCTOBER 2004
[1.10] Europhys. Lett., 68 (6), pp. 804–810 (2004)
[1.11] November 1, 2005 / Vol. 30, No. 21 / OPTICS LETTERS
[1.12] 23 June 2008 / Vol. 16, No. 13 / OPTICS EXPRESS 9714
[1.13] Appl. Phys. B 76, 263–266 (2003)
[1.14] OPTICS LETTERS / Vol. 24, No. 22 / November 15, 1999
[1.15] 10 December 2007 / Vol. 15, No. 25 / OPTICS EXPRESS 17096
[2.1]fundamentals of photonics, Bahha E.A.Saleh ,Malvin carl tech
[2.2] 主動式多通道窄頻寬通Ti:PPLN波導濾波及模態轉換器之研究,黃俊育
[2.3] Hsi-Chun Liu, and A. H. Kung , “ Substantial gain enhancement for optical parametric amplification and oscillation in two-dimensional χ(2) nonlinear photonic crystals “,23 June 2008 / Vol. 16, No. 13 / OPTICS EXPRESS 9714
[2.4] R. W. Boyd, Nonlinear Optics, 2nd Ed. Chap. 2 (Academic Press, 2003).
[3.1] J. Webjorn, F. Laurell, G. Arvidsson, “Blue light generated byfrequency doubling of laser diode light in a Lithium Niobate channelwaveguide,” IEEE Photon Techonol. Lett., 1, p316-318 (1989)
[3.2] “PERIODICALLY POLED LITHIUM NIOBATE: MODELING,FABRICATION, AND NONLINEAR-OPTICAL PERFORMANCE” ,Gregory David MillerJuly 1998,Department of Electric Engineering,Stanford University
[3.3] Alan C. G. Nutt, Venkatraman Gopalan, and Mool C.Gupta,“Domain inversion in LiNbO3 using direct electron-beamwriting,” Appl. Phys. Lett., 60, p2828-2830 (1992)
[3.4] 非週期性晶格極化反轉鈮酸鋰作為有效率的二倍頻和模態轉換器之研究 ,張正良
[3.5] Gregory David Miller, “Periodically poled lithium
niobate: Modeling, fabrication, and nonlinear-optical”,
Stanford university (1998)
[3.6] 週期性極化反轉鈮酸鋰的分析與制作,陳贊元
[4.1] IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 33, NO. 10, OCTOBER 1997
[4.2] D.H. Jundt, “Temperature-dependent Sellmeier equation for the index of refraction, ne, in congruent lithium
niobate,” Opt. Lett. 22, 1553-1555 (1999).
[4.3]Yen-Chieh Huang,“ch3 Electro-optics”,Principles of nonlinear optics
|