Investigate nanoscale materials including quantum dots, quantum wire, colloidal nanocrystals,
carbon nanotubes, 2D layered semiconductors, and individual defects/dopants implanted in those nano materials under high magnetic field and low temperature. 

Advanced Magneto-optical Imaging and Spectroscopy Capabilities include:

• Photoluminescence (PL).
• PL excitation.
• Raman spectroscopy and excitation profiling.
• Polarization resolved imaging and spectroscopy.
• Time and energy resolved PL spectroscopy.
• Photon correlation spectroscopies.

Additional Capabilities include:

• 9T Superconducting magnet and microscopy cryostat.
• NIRvana 2D InGaAs diode array detector.
• TE cooled CMOS camera.
• LN cooled Roper Scientific CCD camera and .5 meter Acton spectrometer.
• Princeton Instruments IsoPlane High Throughput Imaging Spectrometer.
• Princeton Instruments Triple Monochromator system with UV and red sensitive CCD detectors.
• Multiple CW diode lasers spanning excitation from 650 nm–680 nm and 405 nm–460 nm.
• Quantum Opus, Two Channel Superconducting Nanowire Single Photon Detection System (>85% QE at 1.55 µm, <50ps timing resolution).
• NKT photonic FIU15 supercontinuum laser and Phton etc. laser line tunable filter. (400 nm–1700 nm, 200 ps).
• MSquare EEM CW Ti:Sapphire laser with frequency doubler and sum-frequency generator. (350 nm–1000 nm).
• Perform low temperature electrical transport studies simultaneously with the advanced optical spectroscopies. 

Contact: Han Htoon

Research Highlight:
Site-controlled telecom-wavelength single-photon emitters in atomically-thin MoTe2
Zhao, H.; Pettes, M. T.; Zheng, Y.; Htoon, H. Nature communications 2021, 12 (1), 1-7. doi.org/10.1038/s41467-021-27033-w