| Title | Free electron concentration dependent sub-bandgap optical absorption characterization of bulk GaN crystals |
| Publication Type | Journal Article |
| Year of Publication | 2015 |
| Authors | Pimputkar, S., S. Suihkonen, M. Imade, Y. Mori, JS. Speck, and S. Nakamura |
| Journal | Journal of Crystal Growth |
| Volume | 432 |
| Pagination | 49–53 |