Tm(3+)/Ho(3+) codoped tellurite fiber laser |
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Authors: | Tsang Yuen Richards Billy Binks David Lousteau Joris Jha Animesh |
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Institution: | Photon Physics Group, School of Physics and Astronomy, The University of Manchester, Manchester, UK. yuen.tsang@manchester.ac.uk |
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Abstract: | Continuous-wave and Q-switched lasing from a Tm(3+)/Ho(3+) codoped tellurite fiber is reported. An Yb(3+)/Er(3+)-doped silica fiber laser operating at 1.6 microm was used as an in-band pump source, exciting the Tm(3+) ions into the (3)F(4) level. Energy is then nonradiatively transferred to the upper laser level, the (5)I(7) state of Ho(3+). The laser transition is from the (5)I(7) level to the (5)I(8) level, and the resulting emission is at 2.1 microm. For continuous wave operation, the slope efficiency was 62% and the threshold 0.1 W; the maximum output demonstrated was 0.16 W. Mechanical Q switching resulted in a pulse of 0.65 microJ energy and 160 ns duration at a repetition rate of 19.4 kHz. |
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