Professor Shy, Jow-Tsong

Professor

Shy, Jow-Tsong

Personal Website

Office：886-3-5742274 (PHYS R229)

Laboratory：Laser Spectroscopy Laboratory

Lab Tel：886-3-5742561 (PHYS R307)

Fax：886-3-5723052

E-mail：shy@phys.nthu.edu.tw

	Education
1977-1982 Ph.D. in Optical Sciences, University of Arizona, U.S.A. 1975-1976 M.S. in Physics, University of Illinois, U.S.A. 1969-1973 B.S. in Physics, Tsing Hua University, R.O.C.
	Professional Experience
Current position： 1990-present, Professor of Physics, National Tsing Hua University Experience： 1990-1991, Visiting Scholar, Max-Planck-Institute for Quantum Optics, Germany 1983-1990, Associate Prof. of Physics, National Tsing Hua University
	Research Fields
Laser Spectroscopy Laser Optics Atomic and Molecular Physics
	Research Interests and achievement
Updated on September 3, 2006 1. Frequency stabilization and measurements of CO₂ lasers We introduced the optogalvanic Lamb-dip stabilization method to CO₂ laser. We first performed the saturated fluorescence stabilization for sequence-band and hot-band CO₂ laser transitions. Using our stabilization cell, we measured the frequencies of CO₂ laser lines with Dr. K.M. Evenson of NIST, USA. Our results improve the molecular constants and frequencies for the CO₂ laser. 2. Iodine-stabilization of lasers We have built iodine-stabilized 543-nm HeNe lasers with stability better than 1 �e 10^-13. We carefully studied this wavelength standard and the corresponding iodine hyperfine transitions. Recently, we have measured the frequencies of iodine hyperfine transitions in 750 to 780 nm using an optical frequency comb (OFC). At present, we are working with Professor Tiemann’s group in University of Hannover on improving the prediction of hyperfine frequencies. 3. Precision laser spectroscopy A precision tunable PPLN-based DFG system is used to measure the Mid-IR transitions of simple molecular ions such as H₃⁺, HeH⁺, and HD⁺. We have produced the most accurate transition frequencies for H₃⁺ and HeH⁺. With Yi-Wei Liu’s group, we are working on the precision spectroscopy of Li, Tl, and He atoms using various lasers and OFC.

Selected Publications

[2005] H.C. Chui, M.S. Ko, Y.W. Liu, J.T. Shy, J.L. Peng, and H. Ahn, “Absolute Frequency Measurement of Rubidium 5S-7S Two-photon Transitions Using a Femtosecond Laser Comb”, Opt. Lett. Vol. 30, 842-844 (2005).
[2005] H.C. Chui, S.Y. Shaw, M.S. Ko, Y.W. Liu, J.T. Shy, T. Lin, W.Y. Cheng, R.V. Roussev, and M.M. Fejer, “Iodine-stabilization of a Diode Laser in the Optical Communication Band”, Opt. Lett. Vol. 30, 646-648 (2005).
[2003] L.C. Lin, H.F. Meng, J.T. Shy, S.F. Horng, and et al. “Triple-Single Exciton Formation in Poly(p-Phenylene-Vinylene) Light-Emitting Diodes”, Phys. Rev. Lett. Vol. 90, 036601-1 (2003).
[2002] A.C. Chiang, Y.Y. Lin, T.D. Wang, Y.C. Huang, and J.T. Shy, “Distributed-Feedback Optical Parametric Oscillation by Use of a Photorefractive Grating in Periodically Poled Lithium Niobate”, Opt. Lett. Vol. 27, 1815-1817 (2002).
[2001] W.Y. Cheng and J.T. Shy, “Wavelength Standard in 543 nm and the Corresponding ¹²⁷I₂ Hyperfine Transitions”, J. Opt. Soc. Am. B Vol. 18, 363-369 (2001).
[1994] A.G. Maki, C.C. Chou, K.M. Evenson, L.R. Zink and J.T. Shy, “Improved Molecular Constants and Frequencies for the CO₂ Laser from New High-J Regular and Hot-Band Frequency Measurements”, J. Mol. Spectrosc. Vol. 167, 211-224 (1994).
[1994] T. Lin, Y.W. Liu, W.Y. Cheng, J.T. Shy, B.R. Jih and K.L. Ko, “Iodine-Stabilized 543 nm He-Ne Lasers”, Opt. Commun., Vol. 107, 389-394 (1994).
[1992] C.C. Chou, J.T. Shy, and T.C. Yen, “Saturated 4.3-�慆 Fluorescence Frequency Stabilization of a Sequence-band CO₂Laser”, Opt. Lett., Vol. 17, 967-969 (1992).

All Publications

A. Refereed Papers:

1. J.T. Shy, J.W. Farley, W.E. Lamb, Jr., W.H. Wing, "Observation of the Infrared Spectrum of the Triatomic Deuterium Molecular Ion D3+", Phys. Rev. Lett., Vol. 45, 535-537 (1980).
2. J.T. Shy, J.W. Farley, W.H. Wing, "Observation of the Infrared Spectrum of the Triatomic Molecular Ion H2D+", Phys. Rev. A, Vol. 24, 1146-1149 (1981).
3. J.T. Shy, G.A. Kyrala, D.E. Tolliver, and W.H. Wing, "Laser Stabilization on CO2 Saturated-Absorption Fluorescence without Cryogenics", J. of Opt. Eng. (ROC), Vol. 2, 22-27 (1985).
4. J.T. Shy, and T.C. Yen, "Optogalvanic Lamb-Dip Frequency Stabilization of a CO2 Laser", Opt. Commun., Vol. 60, 306-308 (1986).
5. J.T. Shy, and T.C. Yen, "Optogalvanic Lamb-Dip Frequency Stabilization of a Sequence-Band C02 Laser", Opt. Lett., Vol. 12, 325-327 (1987).
6. J.T. Shy, and D.J. Huang, "Low-cost Frequency Stabilized CO2 Laser Using 4.3-mm Saturated Fluorescence", Appl. Opt., Vol. 27, 4374-4376 (1988).
7. J.L. Chern, and J.T. Shy, "Spatial Disorder in a Nonlinear Optical System: (1) The Number of Unstable Modes in the Short Delay Limit", Opt. Commun., Vol. 69, 108-112 (1988).
8. J.T. Shy, and C.R. Yang, "Two Mode Frequency Stabilization of a 543-nm He-Ne Laser Using Current Feedback", Appl. Opt (Lett.), Vol. 28, 4977-4978 (1989).
9. J.L. Chern, and J.T. Shy, "Stability Criterion for a Laser System", Chinese J. Phys., Vol. 27, 455-459 (1989).
10. J.L. Chern, J.K. Mclver and J.T. Shy, "Effect of Delay in a Bistable Optical System With Distributed Nonlinear Elements", Opt. Commun., Vol. 76, 63-68 (1990).
11. T. Lin, and J.T. Shy, "Polarization Properties of an Internal-Mirror 543.5-nm HeNe Laser", Jpn. J. Appl. Phys., Vo1.29, 878-882 (1990).
12. C.S. Lau and J.T. Shy, "A Student Experiment on Optical Bistability", Am. J. Phys., Vol. 59, 54-56 (1991).
13. C.S. Wang, J.L. Chern, J.T. Shy, Y.S. Gou and J.K. Mclver, "Pitchfork Bifurcation, Crisis, and Flip-flop Operation in a Two-element Optical Bistable Device", Phys. Lett. A. Vol. 152, 21-27 (1991).
14. C.C. Tsai, T. Lin, C.Y. Shieh, T.C. Yen and J.T. Shy, "CO2 Laser Frequency Stabilization Using RF Optogalvanic Lamb-dip", Appl. Opt. Vol. 30, 3842-3845 (1991).
15. C.S. Wang, C.S. Lau, J.T. Shy and Y.S. Gou, "A Simple Experiment of Simulating Optical Bistability with an Oscilloscope and Photodiodes", Jpn. J. Appl. Phys. Vol. 30, 3403-3409 (1991).
16. C.Y. Shieh, C.C. Chou, C.C. Chen, T.M. Huang, J.D. Chern, T.C. Yen and J.T. Shy, "Optogalvanic Lamb-dip Frequency Stabilization of a Sequence-band CO2 Laser Using External RF Discharge and Heterodyne Frequency Measurements of Sequence-band Transitions", Opt. Commun., Vol. 88, 47-53 (1992).
17. C.C. Chou, J.T. Shy, and T.C. Yen, "Saturated 4.3-mm Fluorescence Frequency Stabilization of a Sequence-band CO2 Laser", Opt. Lett., Vol. 17, 967-969 (1992).
18. T.L. Huang, T. Lin, and J.T. Shy, "Two-Mode Frequency Stabilization of an Internal-Mirror 1.523-mm He-Ne Laser", Jpn. J. Appl. Phys., Vol. 32, 849-850 (1993).
19. C.S. Wang, N.P. Chen, J.T. Shy, and Y.S. Gou, "A Simple Experiment of Simulating Optical Flip-Flop Operator with Two Oscilloscopes and Photodiodes", Jpn. J. Appl. Phys., Vol. 32, 2674-2680 (1993).
20. T.K. Ho, S.Y. Shaw and J.T. Shy, "A Simple Sequence-Band CO2 Waveguide Laser", J. Appl. Phys., Vol. 74, 6460-6461 (1993).
21. T. Lin, Y.W. Liu, W.Y. Cheng, J.T. Shy, B.R. Jih and K.L. Ko, "Iodine-Stabilized 543 nm He-Ne Lasers", Opt. Commun., Vol. 107, 389-394 (1994).
22. A. G. Maki, C. C. Chou, K. M. Evenson, L. R. Zink and J. T. Shy, "Improved Molecular Constants and Frequencies for the CO2 Laser from New High-J Regular and Hot-Band Frequency Measurements", J. Mol. Spectrosc., Vol. 167, 211-224 (1994).
23. L. H. Xu, R. M. Lees, K. M. Evenson, C. C. Chou, J. T. Shy and E. C. C. Vasconcellos, "FIR Laser Spectroscopy for CH3OH Pumped with the New Boulder Laser", Can. J. Phys., Vol. 72, 1155-1164 (1994).
24. S. L. Wu, W. J. Hsieh, D. G. Chen, J. Y. Wang, J. T. Shy and G. H. Hsiue, "Synthesis and Characterization of Ferroelectric and Antiferroelectric Acid", Mol. Cryst. Liq. Cryst. Vol. 264, 39-50 (1995).
25. T. K. Ho, S. Y. Shaw and J. T. Shy, "Waveguide CO2 Lasers on Sequence-Band Transitions", Appl. Phys. B Vol. 61, 95-99 (1995).
26. C.C. Chou, K.M. Evenson, A.G. Maki and J.T. Shy, "New CO2 Laser Lines in the 11-mm Wavelength Region: New Hot Bands", IEEE J. Quantum Electron., Vol. 31, 343-345 (1995).
27. C. C. Chou, A. G. Maki, S. Ya. Tochitsky, J. T. Shy, K. M. Evenson and L. R. Zink, "Frequency Measurements and Molecular Constants of CO2 00°2-[10°1,02°1]I,II Sequence Band Transitions", J. Mol. Spectrosc..Vol. 172, 233-242 (1995).
28. S. YaTochitsky, C. C. Chou and J. T. Shy, "Frequency Stabilization of the Sequence-Band CO2 Laser Using the 4.3-mm Fluorescence Method", IEEE J. Quantum Electron. Vol. 31, 1223-1230 (1995).
29. G. H. Hsiue, J. K. Kuo, R. J. Jeng, T. H. Suen, R. R. Lee, J. T. Shy, and Y. L. Liu, "Nonlinear Optically Active Polyimide Containing Phenoxysilicon Linkages", Mol. Cryst. Liq. Cryst. Sci, Technol. Sec. B: Nonlinear Optics, Vol. 15, 367-374 (1996).
30. T. H. Suen, R. R. Lee, J. T. Shy, G. H. Hsiue, W. J. Kuo, C. J. Hsieh, and R. J. Jeng, "Nonlinear Optically Active Liquid Crystalline Polymers and Their Copolymers Based on Tolane Chromophores", Mol. Cryst. Liq. Cryst. Sci. Technol. Sec. B: Nonlinear-Optics, Vol. 15, 399-402 (1996).
31. W. T. Ni, S. S. Pan, G. S. Peng, J. T. Shy, S. M. Tseng, S. L. Tsao, S. E. Wang, J. Wu, S. A. Wu, and H. C. Yeh, "Progress in Laboratory R&D for Fundamental Physics Space Mission-Weak Light Phase Locking, Fiber-Linked Heterodyne Interferometry, Fibre Delay Line and Picometre-Real-Time Motion Control", Class. Quantum Grav. Vol. 13, A311-315 (1996).
32. G. H. Hsiue, J. K. Kuo, R. J. Jeng, T. H. Suen, and J. T. Shy, "Organosoluble Polyimides for Second-order Nonlinear Optics", J. of Eng. Appl. Sci. Vol. 2, 1489-1492 (1996).
33. K. Boudjarane, J. T. Shy, and M. Larzilliere, "An Extension of the (B2S＋u－X2S＋g) System of the 14N2＋ and 15N2＋", J. Phys. Chem., Vol. 101, 6712-6716 (1997).
34. W. Y. Cheng, J. T. Shy, and T. Lin, "A Compact Iodine-Stabilized He-Ne Laser and Crossover Resonances at 543 nm", Opt. Commun. Vol. 56, 170-177 (1998).
35. S. C. Jeng, D. Y. Chung, C. C. Liaw, F. H. Yang, J. T. Shy, T. Lin, and S. Y. Shaw, "Absolute Frequencies of the 133Cs2 Transitions near 1064 nm", Opt. Commun. Vol. 155, 263-269 (1998).
36. W. Y. Cheng, J. T. Shy, "Lamb-dip Stabilized 543 nm He-Ne Lasers and Isotope Shift of the Ne 2s-3p Transition", Appl. Phys. B (accepted).
37. W. Y. Cheng, Y. S. Chen, C. Y. Cheng, and J. T. Shy, 'Frequency Stabilization and Absolute Frequency Measurement of 543 nm He-Ne Laser", Opt. Quantum Electron. (accepted).
38. T. L. Huang, Y. S. Chen, W. Y. Cheng, T. Lin, J. T. Shy, and H. P. Liu, "Two-mode Stabilized 612 nm He-Ne Laser", Proc. NSC (accepted).

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