Semiconductor laser in the 21st Century

The semiconductor laser has been taking an important role in optoeletronics and IT backbones and will be keeping its position for the coming at least 10 years. There would still be a lot of chances to meet really novel subjects in research and development, e. g. the coverage of full spectral ranges, temperature insensitive operation, ultra-high power capability, frequency control, large scale integration, and so on. In this paper, we like to discuss on the semiconductor laser for tomorrow based upon the experience of founding research of vertical cavity surface emittng laser(VCSEL).