Associated Scientist: Scott A. Crooker <email@example.com> or (505) 665-7595
Samples are typically mounted on one of our fiber-coupled, low temperature probes. Additional fibers then couple excitation light and collected signal to the optics lab. Temperatures down to 350mK are possible in the 60T Long-pulse magnet, and 1.3K in the 50T magnet. Light is dispersed in 1/3 meter f=4 spectrometers.
Possible light sources include the 442nm and 325nm lines from a HeCd laser, semiconductor diode lasers (~635nm, 532 nm), and the output from a tunable femtosecond Ti:S laser (700-1000nm, or 350-500nm if frequency doubled). For white-light, a 100W quartz lamp is used.
Single-frequency measurements can be performed in either short- or long-pulse magnets with the appropriate fast photodiode or photomultiplier tube.