Setyo Purwanto R&D Centrefor Materials Science and Technology-BA TAN Kawasan Puspiptek, Serpong, Tangerang 15314 Indonesia
Isao Sakamoto Photonics Research Institute, AIST—JAPAN' Japan
M. Koike Photonics Research Institute, AIST—JAPAN' Japan
H. Tanoue Photonics Research Institute, AIST—JAPAN'