Abstract
We report the experimental observation of random wavelength emission and intensity-dependent central-wavelength shift in a diode-pumped Yb3+-doped Y2O3 ceramic laser. We show experimentally that, like conventional lasers, the emission of the laser has fixed well-defined transverse modes; however, its instantaneous emission wavelengths change randomly with time. The central wavelength of the laser emission also shifts with the intracavity light intensity. A model was developed to describe the spectral behavior of Yb3+-doped lasers. We show that the observed random wavelength emission and central lasing wavelength shift of the laser could be well explained based on the strong reabsorption of light in the gain medium.
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42.55.Rz; 42.60.Mi; 42.55.Xi
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Kong, J., Tang, D., Lu, J. et al. Spectral characteristics of a Yb-doped Y2O3 ceramic laser. Appl. Phys. B 79, 449–455 (2004). https://doi.org/10.1007/s00340-004-1594-3
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DOI: https://doi.org/10.1007/s00340-004-1594-3