1. 雷射物理與技術
2. 非線性光學與量子物理
3. 半導體光電元件
4. 生醫工程

1. 雷射與近代光學
2. 光與物質的高速動力學及其應用
3. 跨領域物理學
4. 生醫光電系統與預防性健康照護(精準健康)

以廣義固態雷射(包含晶體、光纖、半導體)之設計製造為核心實驗技術，輔以高速攝影…等各式光電量測與計算模擬技術，透過物理觀點與理論方法，研究物理現象並解決光電工程問題、發展創新儀器設備。除了既有之雷射物理與工程、醫療應用實績，近期亦發展：結構化雷射誘發流體與電漿之光電與力學作用及其應用(包含微流體致動、水下聲學、雷射驅動光源增強、真浮空彩色光點(影像))，智慧健康照護之光學檢測方法與感測器技術，光固化積層製造與微光學元件。

1. C.H. Chang, K. T. Yen, A. L. Li, Y. R. Li, and K. W. Su,* “LED-pumped eye-safe pulse laser with an extracavity optical parametric oscillator,” Opt. Lett. 48, 15, 3877-3880 (2023).    C. Y. Cho, C. C. Pu, Y. F. Chen, and K. W. Su,* “Energy scale-up and mode-quality enhancement of the LED-pumped Nd:YAG Q-switched laser achieving a millijoule green pulse,” Opt. Lett. 44, 13, 3202-3205 (2019).    C. Y. Cho, C. C. Pu, K. W. Su,^† and Y. F. Chen,* “LED-side-pumped Nd:YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser,” Opt. Lett. 42, 12, 2394-2397 (2017).
2. T.J. Lin, K. T. Yen, C. F. Chen, S. T. Yan, K. W. Su,^† and Y. L. Chiang* “Label-Free Uric Acid Estimation of Spot Urine Using Portable Device Based on UV Spectrophotometry,” Sensors 22(8), 3009 (2022)
3. K.T. Yen, C. H. Wu, P. H. Wang, P. H. Tuan, and K. W. Su,* “Investigating the Threshold Conditions of Air Breakdown with Mode-Locked Q-Switched Laser Pulses, and the Temporal Dynamics of Induced Plasma with Self-Scattering Phenomenon,” Appl. Sci. 12(1), 41 (2022).
4. Ross C. C. Chen, Y. T. Yu, K. W. Su,^† F. Chen, and Y. F. Chen,* “Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface,” Opt. Express 21, 1, 445-453 (2013).
5. Y.T. Chang, Y. P. Huang, K. W. Su,* Y. F. Chen, “Comparison of thermal lensing effects between single-end and double-end diffusion-bonded Nd:YVO4 crystals for 4F3/2→4I11/2 and 4F3/2→4I13/2 transitions,” Opt. Express 16, 25, 21155–21160 (2008).    Y. T. Chang, K. W. Su,* H. L. Chang, and Y. F. Chen,* “Compact efficient Q-switched eye-safe laser at 1525 nm with a double-end diffusion-bonded Nd:YVO4 crystal as a self-Raman medium,” Opt. Express 17, 6, 4330-4335 (2009).
6. J.Y. Huang, S.C. Huang, H.L. Chang, K.W. Su,^† Y.F. Chen,* and K.F. Huang, ” Passive Q switching of Er-Yb fiber laser with semiconductor saturable absorber,” Opt. Express 16, 3002-3007 (2008).    J. Y. Huang, W. Z. Zhuang, W. C. Huang, K. W. Su,^† K. F. Huang, and Y. F. Chen,* “Hybrid Q-switched Yb-doped fiber laser,” Opt. Express 19, 9364-9370 (2011).
7. Y.F. Chen,* T.H. Lu, K.W. Su, K.F. Huang, “Devil’s Staircase in Three-Dimensional Coherent Waves Localized on Lissajous Parametric Surfaces,” Phys. Rev. Lett. 96, 21, 213902 (2006).    C. C. Chen, Y. T. Yu, Ross C. C. Chen, Y. J. Huang, K. W. Su, Y. F. Chen,* and K. F. Huang, “Transient Dynamics of Coherent Waves Released from Quantum Billiards and Analogous Observation from Free-Space Propagation of Laser Modes,” Phys. Rev. Lett. 102, 4, 044101 (2009).
8. Y.F. Chen,* K.W. Su, T.H. Lu, K.F. Huang, “Manifestation of weak localization and long-range correlation in disordered wave functions from conical second harmonic generation,” Phys. Rev. Lett. 96, 3, 033905 (2006).
9. K.W. Su, S.C. Huang, A. Li, S.C. Liu, Y.F. Chen, and K.F. Huang, “High-peak-power AlGaInAs quantum wells 1.3-μm laser pumped by a diode-pumped actively Q-switched solid-state laser,” Opt. Lett. 31, 13, 2009-2011 (2006).
10. K.W. Su, H.C. Lai, A. Li, Y.F. Chen, K.F. Huang, “InAs/GaAs quantum-dot saturable absorbers for a diode-pumped passively mode-locked Nd:YVO4 laser at 1342 nm,” Opt. Lett. 30, 12, 1482-1484 (2005).