Room Temperature CW Operation of GaN-Based Blue Laser Diodes by GaInN/GaN Optical Guiding Layers


GaN-based short wavelength laser diodes are the most promising key device for a digital versatile disk. We have been improving the important points of the laser diodes in terms of optical guiding layers, mirror facets. The continuous wave laser irradiation at room temperature could be achieved successfully by reducing the threshold current to 60 mA (4 kA/cm2). We have tried to apply the multi low temperature buffer layers to the laser diodes for the first time to reduce the crystal defects.

This is a preview of subscription content, access via your institution.


  1. 1.

    S. Nakamura, M. Senoh, S. Nagahama, N. Iwasa, T. Matsushita and T. Mukai, Proc. 2nd Intern. Symp. On Blue Laser and Light Emitting Diodes, Chiba, Japan, 1998, p.371 (Ohm-sha, Ltd. Tokyo, 1998).

    Google Scholar 

  2. 2.

    I. Akasaki, H. Amano, S. Sota, H. Sakai, T. Tanaka and M. Koike, Jpn. J. Appl. Phys., 34, L1517 (1995).

    CAS  Article  Google Scholar 

  3. 3.

    A. Usui, H. Sunakawa, A. Sakai and A. A. Yamaguchi, Jpn. J. Appl. Phys., 36, L899 (1997).

    CAS  Article  Google Scholar 

  4. 4.

    S. Nakamura, M. Senoh, S. Nagahama, N. Iwasa, T. Yamada, T. Matsushita, H. Kiyoku, Y. Sugimoto, T. Kozaki, H. Umemoto, M. Sano, and K. Chocho, Jpn. J. Appl. Phys., 36, L1568 (1997).

    CAS  Article  Google Scholar 

  5. 5.

    T. S. Zheleva, S. A. Smith, D. B. Thomson, T. Gehrke, K. J. Linthicum, P. Rajagopal, E. Carlson, W. M. Ashmawi and R. F. Davis, MRS Internet J. Nitride Semicond. Res., 4S1, G3.38 (1999).

    Google Scholar 

  6. 6.

    N. Koide, H. Kato, M. Sassa, S. Yamasaki, K. Manabe, M. Hashimoto, H. Amano, K. Hiramatsu and I. Akasaki, J. Cryst. Growth, 115, 639 (1991).

    CAS  Article  Google Scholar 

  7. 7.

    I. Akasaki, H. Amano, H. Murakami, M. Sassa, H. Kato and K. Manabe, J. Cryst. Growth, 128, 379 (1993).

    CAS  Article  Google Scholar 

  8. 8.

    T. Kozawa, T. Kachi, T. Ohwaki, Y. Taga, N. Koide and M. Koike, J. Electrochem. Soc., 143, 1, L17 (1996).

    CAS  Article  Google Scholar 

  9. 9.

    S. Nakamura and G. Fasol, The Blue Laser Diode, P.250 (Springer-Verlag Berlin Heidelberg, 1997).

  10. 10.

    M. Iwaya, T. Takeuchi, S. Yamaguchi, C. Wetzel, H. Amano and I. Akasaki, Jpn. J. Appl. Phys., 37, L316 (1998).

    CAS  Article  Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Masayoshi Koike.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Koike, M., Yamasaki, S., Tezen, Y. et al. Room Temperature CW Operation of GaN-Based Blue Laser Diodes by GaInN/GaN Optical Guiding Layers. MRS Online Proceedings Library 595, 12 (1999).

Download citation