Page 9 - PR 2014 2016 02 Lasers Technology
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Lasers Technology | Progress Report 23
cross-section at λ – 962 nm is approximately
P2
sixteen times larger than the ground state ( I )
5
8
absorption process. Our calculation suggest(s)
that even for high Ho concentration in which
3+
cross-relaxation has been shown in previously
to quench the I level, ESA is nevertheless
5
6
strong enough to allow a sufficient popula-
tion inversion required for practical CW laser
3+
emission at 3930 nm. A Ho -doped InF3 glass
with holmium concentration of 10 mol% can
be used as a practical laser medium to generate
continuous laser emission at 3930 nm using
two diode lasers pumping at 889 and 962 nm.
