Mode competition between 0.9- and 1.08-μm laser transitions in a Nd3+-doped fiber laser

Yasuo Kimura, Masataka Nakazawa

Research output: Contribution to conferencePaperpeer-review


Mode competition between 0.908- and 1.08-μm transitions of Nd3+ ions in multiwavelength oscillations is reported. A fiber laser using a 4-m-long fiber with a 50-ppm Nd3+ doping, butted directly against the input and output mirrors, was used in the study. When the absorbed pump power is increased to 4.5 mW, a laser oscillation starts at 1.08 μm. With increase of the pump power to 7.5 mW, an oscillation at 0.9 μm takes place. At 7.5 mW, the output power at 1.08 μm starts to saturate. By further increasing the pump power up to 13 mW, the output power at 0.908-μm oscillation increases while 1.08-μm oscillation stops. Here the output power at 0.908 μm is linearly proportional to the absorbed pump power. This result shows that the laser oscillation at 1.08 μm strongly depends on the laser oscillation at 0.908 μm. Tha is, mode competition exists between the two laser oscillations. The mechanism of the mode competition is explained. Since the change of oscillation wavelengths depends on pump power, there is the possibility of making all-optical switches utilizing the wavelength change.

Original languageEnglish
Number of pages1
Publication statusPublished - 1989 Dec 1
Externally publishedYes
EventOptical Fiber Communication Conference: Summaries of Papers - Houston, TX, USA
Duration: 1989 Feb 61989 Feb 9


OtherOptical Fiber Communication Conference: Summaries of Papers
CityHouston, TX, USA

ASJC Scopus subject areas

  • Engineering(all)


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