Research

Inteligent THz instrumentation and metrology

		Paper	Slide
1. THz technology
2. Asynchrnous optical sampling (ASOPS)
	2-1. ASOPS THz time-domain spectroscopy (ASOPS-THz-TDS)	Ti:S /Er:F	X
	2-2. Time-of-flight impulse ranging	X	X
3．THz comb
	3-1. THz frequency metrology based on THz comb	X	X
	3-2. Multi-frequency-heterodyning THz comb spectroscopy	X	X
	3-3. THz spectrum analyzer	Ti:S /Er:F	X
	3-4. CW-THz ranging
	3-5. Dual THz comb spectroscopy	X	X
	3-6. Gapless THz comb spectroscopy
4．Optical comb
	4-1. THz synthesizer	X / XX	X
5. Real-time THz imaging of moving objects
	5-1. 2D spatio-temporal imaging	X
	5-2. Real-time THz tomography	X	X
	5-3. THz color scanner	X	X
	5-4. THz computed tomography	2D / 3D	2D / 3D
6. THz applications
	6-1. THz paintmeter	Exp. /Anal.	X
	6-2. Water content in dry foods	X	X
	6-3. Skin measurement
	6-4. Biomedical applications of THz color scanner	X	X
	6-5. Gas analsys using ASOPS-THz-TDS	X	X

Collagen-sensitive second-harmonic-generation microscopy

		Paper	Slide
1. Collagen-sensitive SHG microscopy		X	X
2. Polarization-resolved SHG microscopy
	2-1. Collagen orientation	X1 X2 X3	X
	2-2. Polarization-modulated SHG microscopy
3. Dermatological application
	3-1. Assessment of skin aging in human skin	X	X
	3-2. Relation between wrinkling direction and collagen orientation in photoaged skin	X	X
	3-3. Burn assessment	X	X
	3-4. Monitoring of healing process of skin burn

Apparatus

Laser Source

1. Femtosecond mode-locked Ti:Sapphire laser oscillator (TiF-Kit-100, AVESTA PROJECT)
2. Femtosecond mode-locked Ti:Sapphore laser regenerative amplifier (Hurricane, SpectraPhysics)
3. Ultrashort femtosecond mode-locked Ti:Sapphire laser oscillator (Femtosource Scientific Pro, Femtolasers)
4. Femtosecond mode-locked Cr:Forsterite laser oscillator (CrF-65P, AVESTA PROJECT)
5. Repetition-rate-stabilized, mode-locked Er:Fiber laser oscillator and amplifier (Lab-made, in collaboration with AIST）
6. Stabilized, dual mode-locked Er:Fiber laser oscillator and amplifier (ASOPS TWIN 250 with P250, Menlo Systems)
7. THz qunatum cascade laser (Easy QCL, Longwave Photonics)
8. Sub-THz frequency multiplier chain (AMC-10-R0000, Millitech)
9. Frequency-stabilized CO2 laser (ML3832, MPB)
10. Zeeman stabilized He-Ne laser (MOC-, Micro Optics)

Optical Instruments

• Fmetosecond auto-correlator (Micro, Mini@APE GmbH)
• Optical spectrum analyzer (AQ6315A@Yokogawa）
• Spectrometer（USB2000@Ocean Optics）
• Fiber fusion splicer (S199S@Furukawa)

Electrical Instruments

• Oscilloscope (TDS3052B@Techtronics, SAS-8130A@Iwatsu, etc）
• Fast digitizer (PXI-5122@National Instruments)
• Lock-in amplifier (LI5640@NF Corporation)
• RF spectrum analyzer (E4402B@Agilent Technology)
• RF frequency counter (53132A, 53230A@Agilent Technology）
• Rubidium frequency standard (FS725@Stanford Research Systems)
• Microwave frequency synthesizer (E8257D@Agilent Technology)
• Function generator (33220A, 53132A@Agilent Technology）

Collaboration

• Prof. Tsutomu Araki (Osaka University, Japan)
• Dr. Hajime Inaba (National Institute of Advanced Industrial Science and Technology, Japan)
• Prof. Kaoru Minoshima (University of Electro-Communications, Japan)
• Dr. Shuko Yokoyama (Micro Optics Co., Ltd., Japan)
• Dr. Emmanuel Abraham (University of Bordeaux, France)
• Dr. Francis Hindle (University of Littoral Côte d'Opale, France)
• Dr. Mitsuhiko Takahashi (University of Tokushima, Japan)
• Dr. Jiro Miura (Osaka University, Japan)
• Shiseido Research Center