@article{oai:nitech.repo.nii.ac.jp:00004567, author = {Zhao, G. Y. and Ishikawa, H. and Yu, G. and Egawa, Takashi and Watanabe, J. and Soga, Tetsuo and Jimbo, Takashi and Umeno, Masayoshi}, issue = {1}, journal = {APPLIED PHYSICS LETTERS}, month = {Jul}, note = {A study of thermo-optical coefficient (dn/dT) of GaN using spectroscopic ellipsometry is made, and a large thermo-optical nonlinearity near band edge, which increases with increasing temperature, has been observed. Kramers-Kronig transformation has been used to verify our results and a qualitative consistency has been obtained., application/pdf}, pages = {22--24}, title = {Thermo-optical nonlinearity of GaN grown by metalorganic chemical - vapor deposition}, volume = {73}, year = {1998} }