Theoretical study of optical properties of Nano- scale systems

We are studying the optical properties of nano-scale systems theoretically. Though my main interest is in those of size-quantized systems, which show non-local responses, reflecting the coherence of the wave functions of matter, we are also doing the calculation of the photonic bands with high accuracy. In addition to an improved plane wave method (inverse matrix method) which we have developed for a decade, we have also started the photonic band calculations by the finite-difference time-domain method. So we are always able to confirm the accuracy of our calculations. We are next going to investigate the physics of photonic crystals with non-linear media, the control of the optical properties of nano-scale systems embedded in photonic crystals, and so on.

Theoretical study of optical properties of Nano- scale systems Department of Applied Physics and Chemistry Associate Professor Yasushi OHFUTI ohfuti@pc.uec.ac.jp http://enju.pc.uec.ac.jp/
We are studying the optical properties of nano-scale systems theoretically. Though my main interest is in those of size-quantized systems, which show non-local responses, reflecting the coherence of the wave functions of matter, we are also doing the calculation of the photonic bands with high accuracy. In addition to an improved plane wave method (inverse matrix method) which we have developed for a decade, we have also started the photonic band calculations by the finite-difference time-domain method. So we are always able to confirm the accuracy of our calculations. We are next going to investigate the physics of photonic crystals with non-linear media, the control of the optical properties of nano-scale systems embedded in photonic crystals, and so on.
	Example of comparison of the results by improved PW and FD-TD methods.