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Cryo-Optical Spectroscopies

Cryo Raman

Cryo-optical microscopies, including photoluminescence and Raman microscopies, photon-correlation-functions, optically detected magnetic resonance, Rabi, T1, and T2 measurements, are used to probe temperature dependent properties of materials and quantum photonic systems.


  • Cryogen-free operation at temperatures of 3.5-350K in Montana S100 Cryostation
  • Agile-temperature sample mount provides rapid sample temperature sweep while maintaining base temperature in cryostat 
  • Dual 100x (0.85 NA and 0.75 NA) objective configuration for multiple laser excitation or transmission spectroscopies 
  • Dual fiber micro positioners orthogonal to free-space access for fiber-optic access to sample  
  • Tunable CW excitation at 405 nm, 532 nm, 450-650nm, and 900-1300nm 
  • Microwave excitation available for ODMR and spin coherence measurements 
  • Quantum Opus SNSPDs with 30-micron active area for single photon detection at wavelengths of 400-1000nm 
  • 5x5x5mm sample travel 
  • Solid-state magnet for <0.3T operation 


This microscope is regularly used for applications spanning temperature and polarization dependent Raman microscopy, photon antibunching measurements, and spin-based quantum sensing.