We have investigated the CW laser properties of the lanthamide hexa-aluminate La0.9Nd0.1MgAl11O19at room temperature. When a 1 cm long crystal is pumped by an Ar+ laser (514 nm) or a Kr+ laser (752 nm), CW emission is obtained with slope efficiencies of 10 and 26 percent, respectively. A four-plate Lyot filter in the cavity forces the LNA crystal to oscillate in either of the two major bands centered al 10 820 Å (tuning range 80 Å) and 10 545 Å (tuning range 35 Å).
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Schearer et al. (1986) studied this question.
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