| http://www.w3.org/ns/prov#value | - However, there is a problem such that at a high temperature or a low temperature, since the emission light amount is corrected every sampling intervals with respect to the emission output of the semiconductor laser 301 at such a temperature, it takes a long time until the laser beam output of the proper emission light amount is obtained as shown in FIGS. 8B and 8D.
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