Abstract: Since the first photonic Crystal surface emitting laser concept proposed by Noda in 1999, PCSELs had made tremendous progress both in communications and in high power devices.Theunique 2D photonic structure offersmanyadvantagesinmode control of large aperture, narrow beam FFP etc. However there are still many challenges remainand plenty space for innovation. This talk will briefly address these interesting issues.

Bio:Wang Nang Wang is currently the Chief Technology Advisor of LIXIN Technology Ltd, founder of ONIL, and Gaia Bioscience and technology Ltd, holds a PhD degree of Physical Chemistry from Cambridge University. He hasmore than 50 published papers on compound semiconductors and more than 100 granted patents.He has worked asthe Consultant for Materials Research Laboratory and EOS of ITRl. Taiwan, Professor and visiting Professor for Photonics Institute of NCTU, chief Scientist and co-founder of Arima Optoelectronics. Founder, CEO and CTO of Quantum Optech Inc (acquired MRV Communications in 2000). Founder and CTO of Nano GaN (acquired by IOE in 2010), Chief Technical Advisor of IOE/Nano GaN, Professor of Physics. and Electronic and Electrical Engineering, University of Bath Founder and CTO of Gaia Bioscience and Technology Ltd. Emeritus professor of University of Bath and visiting professor of National Yang Ming and Chiao Tung University.