Ultrashort and Ultrabroadband Optical Pulse
We have been studying on measurements and applications of ultrashort and ultrabroadband optical pulses in our laboratory. We have been using optical pulses from Ti:sapphire laser whose widths are in the order of 30 fs. By propagating these pulses in photonic crystal fibers, ultrabroadban optical pulses (supercontinuum) are generated which covers entire visible spectral range.
Ultrafast Pulse Measurements
We have been using frequency-resolve optical gating（FROG and XFROG). Also, we have been evaluating the prototype of dispersive-scan optical setups.
Pulse-Shaping
We have been utilizing a pulse-shaper consits of a liquid-crystal spatial light modulator (SLM) to control the temporal waveform of optical pulses which may be important for generating supercontinuum and spectroscopic applications.
Nonlinear Pulse Propagatin Simulation
We have been performing nonlinear pulse propagtion simulations to analyze the generations of broadband optical pulses and soliton pulses. Theses are important for the applications such as spectroscopy.
Design and Evaluation of PCF
Photonic crystal fiber（PCF）is a fiber which has regular arrangements of holes in the propagation direction. We have been deisning the arrangements of holes for supercontinuum generations.
Nonlinear Optical Microscopy
We have been studying nonlinear optical microscopy, especially coherent anti-Stokes Raman scattering (CARS) microscopy using broadband optical pulses from a photonic crystal fiber.
Ultrafast Digital Holography
We have been studying ultrafast digital holography setups to record multiple digital holograms of ultrafast phenomena using a single-shot optical pulse. Especially, we are using chirped optical pulses for these research.
