SCM3: 17.5 T Magnet for Ultrafast Optics
The superconducting magnet for
ultrafast optics experiments.
SCM3 is a 17.5 T superconducting magnet dedicated for optics research and housed in the ultrafast optics user facility, cell 3 of the DC Field Facility. SCM3 is a cold bore system capable of measurements from 4 K to 300 K.
Steve McGill is the coordinator for ultrafast and continuous-wave (cw) visible optics. Yong-Jie Wang also uses SCM3 for FTIR measurements.
Below are the capabilities of the ultrafast optics user facility.
Light Sources
Ultrafast Sources
Two ultrafast Ti: Sapphire laser cavities:
- Coherent Mira 900
The Mira is capable of cw output and can also be modelocked to obtain 150 fs duration pulses at 76 MHz.
- Coherent Legend regeneratively amplified laser
The Legend produces 2.5 mJ, 1.55 eV, 130 fs pulses at 1 kHz.
We also have a TOPAS optical parametric amplifier coupled with the Legend to produce ultrafast light covering the UV to the mid-IR (λ ~20 μm).
CW Sources
We have broadband lamps for cw optics, including a tungsten source and a xenon lamp. There are also a few cw lasers:
- HeNe laser (visible)
- Coherent Innova 307 argon laser (visible and UV)
- Kimmon HeCd laser (UV)
- Dye laser (visible)
Detector
CW light detection can be accomplished from the visible to the near-IR using a 0.75 focal length McPherson spectrometer coupled with a Princeton instruments CCD and InGaAs array. We also have a photomultiplier chiller and several tubes capable of covering the same range.
For ultrafast detection, the lab operates a Hamamatsu streak camera capable of 2 ps time resolution. In addition, the lab has several fast photodiode detectors, as well as a balanced photodiode receiver for sensitive differential detection.
For more information, contact Steve McGill.
