Personal Website
Office¡G886-3-5742274 (PHYS R229)
Laboratory¡GLaser Spectroscopy Laboratory
Lab Tel¡G886-3-5742561 (PHYS R307)

  1. 1977-1982 Ph.D. in Optical Sciences, University of Arizona, U.S.A.
  2. 1975-1976 M.S. in Physics, University of Illinois, U.S.A.
  3. 1969-1973 B.S. in Physics, Tsing Hua University, R.O.C.
Professional Experience
Current position¡G
  1. 1990-present, Professor of Physics, National Tsing Hua University
  1. 1990-1991, Visiting Scholar, Max-Planck-Institute for Quantum Optics, Germany
  2. 1983-1990, Associate Prof. of Physics, National Tsing Hua University
Research Fields
    1. Laser Spectroscopy
    2. Laser
    3. Optics
    4. 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
  1. [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).
  2. [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).
  3. [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).
  4. [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).
  5. [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).
  6. [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).
  7. [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).
  8. [1992] C.C. Chou, J.T. Shy, and T.C. Yen, ¡§Saturated 4.3-ƒÝm Fluorescence Frequency Stabilization of a Sequence-band CO2Laser¡¨, Opt. Lett., Vol. 17, 967-969 (1992).
    • All Publications (Expansible)