Laboratory of High-Power

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Laboratory of High-Power Semiconductor Lasers

• Dr. Yen-Kuang Kuo
• Ph.D., E.E., Univ. of Southern California, USA
• Associate Professor, Phys. Dept., NCUE
• E-mail ykuo_at_cc.ncue.edu.tw
• Web site http//ykuo.ncue.edu.tw

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Capability of this lab

• We experimentally study the optical properties of
  the semiconductor lasers and light-emitting
  diodes with the techniques of photoluminescence
  and electroluminescence.
• The equipments in this lab can also be utilized
  to measure the transmission, absorption,
  reflection, and Raman spectra.
• In addition to the optoelectronic experiments, we
  also theoretically investigate the optical and
  material characteristics of the optical
  semiconductor devices with LASTIP, PICS3D,
  CASTEP, and MATLAB simulation programs.

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Major facilities in this lab

• Optical tables (2 pieces)
• Argon ion laser (6 W Visible Light, 140 mW UV at
  351.1 nm)
• NdYAG laser (multi-purpose laser)
• Monochromator (750 mm, 2 inputs, 2 outputs)
• Semiconductor laser/LED current source
  (PC-controlled)
• I-V characteristics measurement equipment
• Cooling system for optical measurements (10K
  325K)
• Wide-spectrum light source (200 nm 1100 nm)
• High-sensitivity CCD detector (1340100 Pixels)
• Lock-in Amplifier Photo-Multiplier Tube
• Power meters (3 sets)
• Fast oscilloscope (500 MHz Bandwidth, 5 GHz
  Sampling Rate)
• Fast photo-detectors (Response time 1 ns)
• LED/OLED (Organic light-emitting diode) intensity
  meter
• Doping concentration measurement equipment (good
  for GaN)
• Frequency tuning elements
• Filters

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Photoluminescence measurements
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Major software resources

• LASTIP simulation program (Edge-emitting laser,
  gain, spectra )
• PICS3D simulation program (Vertical-cavity
  surface-emitting laser (VCSEL), distributed Bragg
  reflectors (DBR) )
• CASTEP simulation program (band structures,
  materials properties of semiconductors )
• MATLAB simulation program (High-power lasers,
  Passive Q-switching performance )

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Recent interests

• Investigation of the optical properties of InGaN
  LD/LED/VCSEL
• Investigation of the optical properties of
  AlGaInP LD/LED/VCSEL
• Design of semiconductor lasers for
• (1) long-range optical fiber communication,
• (2) short-distance optical fiber communication,
• (3) high-density DVD.
• High-power, passively Q-switched, solid-state
  lasers

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Thank You!