High-Field Physics and Ultrafast Technology Laboratory
L325

  This new laboratory is lead jointly by Dr. Jyhpyng Wang and Dr. Szu-yuan Chen, and collaborators Dr. Chau-Hwang Lee from Institute of Applied Sciences and Engineering, Academia Sinica, and Prof. Jiunn-Yuan Lin from National Chung-Cheng University. Current emphasis of research is in the development of advanced optical techniques and applications of ultrafast technology in high-field physics.
  In ultrafast laser technology, the Laboratory continues developing femtosecond pulse amplifiers, studying how to correct spatial and temporal phase aberration and how to compensate nonlinear effects, for the purposes of increasing energy gain and pulse contrast. In the mean time the Laboratory also develops spatial-temporal ultrafast waveform measurement techniques, to study nonlinear pulse propagation and to monitor online the waveforms of high power pulses in real time.
  In optical technology, the Laboratory continues developing differential confocal microscopy, a far-field technique with nanometer depth resolution. Spatial encoding/decoding methods are studied for breaking the diffraction limit in all three dimensions. Combined with laser based optical pressure as a driving force, this advanced technique is used to measure the viscoelastic properties of living cells and biomembranes. It is also a convenient tool for rapid online inspection of semiconductor surfaces and optical disks.
  In high-field physics, the Laboratory has recently started experimental research in femtosecond high-power laser excited x-ray laser. Such x-ray lasers have the characteristics of ultrashort pulse and high peak power, suitable for the development of time-resolved spectroscopy and plasma based nonlinear optics in the x-ray region. They can also be used in cellular microscopic tomography and nanometer lithography. Experiments on tera-watt femtosecond laser induced plasma-wave electron accelerator are also under construction. Such accelerators have extremely large acceleration gradient, representing the newest approach in accelerator technology. Other related new frontiers, such as laser induced nuclear reactions, laser induced K-shell x-ray emission, light scattering by relativistic electrons, are also directions for exploration.

 Further information 

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