Oscillation wavelength shifts of diode lasers in a magnetic field

Takashi Sato; Hidetoshi Kawashima; Tomoya Hoshi; Shigeki Yamamoto; Masashi Ohkawa; Takeo Maruyama; Minoru Shimba

doi:10.1117/12.176640

1 June 1994 Oscillation wavelength shifts of diode lasers in a magnetic field

Takashi Sato, Hidetoshi Kawashima, Tomoya Hoshi, Shigeki Yamamoto, Masashi Ohkawa, Takeo Maruyama, Minoru Shimba

Proceedings Volume 2148, Laser Diode Technology and Applications VI; (1994) https://doi.org/10.1117/12.176640
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Research conducted in the early 1960s showed that the oscillation wavelength of a semiconductor laser shifted when exposed to a magnetic field. These experiments were conducted at very low temperatures and in very strong magnetic fields. We observed the wavelength shift toward a longer wavelength and the threshold current increase, in certain types of laser diodes in relatively weak magnetic fields at room temperature using recently developed Fabry-Perot type laser diodes. The shift mechanism, however, is not yet fully understood. We may assume that the presence of a magnetic field affects the current density in certain types of laser diodes, which in turn, affects the temperature around the active layer. This temperature change would then influence oscillation wavelength and threshold current. This means our measurement provides vital information about the current confinement characteristics of laser didoes.

Citation Download Citation

Takashi Sato, Hidetoshi Kawashima, Tomoya Hoshi, Shigeki Yamamoto, Masashi Ohkawa, Takeo Maruyama, and Minoru Shimba "Oscillation wavelength shifts of diode lasers in a magnetic field", Proc. SPIE 2148, Laser Diode Technology and Applications VI, (1 June 1994); https://doi.org/10.1117/12.176640

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