Johnston S F, Clayman B P
Appl Opt. 1980 Sep 15;19(18):3118-20. doi: 10.1364/AO.19.003118.
The experimental procedures and precautions required to measure liquid-alloy reflectivities with a cw far infrared (FIR) laser are described. The output of a carefully stabilized optically pumped FIR laser was channeled to a melted sample contained in a silica holder under a He atmosphere. By maintaining specular reflection and alloy homogeneity, reflectivities reproducible to +/-7% were routinely obtained.
