Publications

Found 8 results
Author Title Type [ Year(Asc)]
Filters: Author is Hirasawa, Hirohiko  [Clear All Filters]
2012
Sato, H., H. Hirasawa, R. B. Chung, S. P. DenBaars, J. S. Speck, and S. Nakamura, Method for fabrication of semipolar (Al, In, Ga, B) N based light emitting diodes, 2012.
2009
Saito, M., H. Yamada, K. Iso, H. Sato, H. Hirasawa, D. S. Kamber, T. Hashimoto, S. P. DenBaars, J. S. Speck, and S. Nakamura, "Evaluation of GaN substrates grown in supercritical basic ammonia", Applied Physics Letters, vol. 94, no. 5: AIP, pp. 052109, 2009.
2008
Sato, H., H. Hirasawa, H. Asamizu, N. Fellows, A. Tyagi, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "The Blue Laser Diode'The Blue Laser Diode', 1997", Journal of light and visual environment, vol. 32, no. 2, pp. 107–110, 2008.
Yamada, H., K. Iso, M. Saito, H. Hirasawa, N. Fellows, H. Masui, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "Comparison of InGaN/GaN light emitting diodes grown on m-plane and a-plane bulk GaN substrates", physica status solidi (RRL)-Rapid Research Letters, vol. 2, no. 2: Wiley Online Library, pp. 89–91, 2008.
Sato, H., H. Hirasawa, H. Asamizu, N. Fellows, A. Tyagi, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, and S. Nakamura, "High power and high efficiency semipolar InGaN light emitting diodes", Journal of Light & Visual Environment, vol. 32, no. 2: The Illuminating Engineering Institute of Japan, pp. 107–110, 2008.
Masui, H., H. Yamada, K. Iso, H. Hirasawa, N. N. Fellows, J. S. Speck, S. Nakamura, and S. P. DenBaars, "Optical polarization of m-plane In-GaN/GaN light-emitting diodes characterized via confocal microscope", physica status solidi (a), vol. 205, no. 5: Wiley Online Library, pp. 1203–1206, 2008.
Sato, H., R. B. Chung, H. Hirasawa, N. Fellows, H. Masui, F. Wu, M. Saito, K. Fujito, J. S. Speck, S. P. DenBaars, et al., "Optical properties of yellow light-emitting diodes grown on semipolar (11 2 2) bulk GaN substrates", Applied Physics Letters, vol. 92, no. 22: AIP, pp. 221110, 2008.
2007
Iso, K., H. Yamada, H. Hirasawa, N. Fellows, M. Saito, K. Fujito, S. P. DenBaars, J. S. Speck, and S. Nakamura, "High brightness blue InGaN/GaN light emitting diode on nonpolar m-plane bulk GaN substrate", Japanese Journal of Applied Physics, vol. 46, no. 10L: IOP Publishing, pp. L960, 2007.