The Visible Quantum Light Microscope (VQLM) is a confocal microscope designed for the analysis of light from single quantum emitters at both room and low temperature. Capabilities include confocal imaging, photoluminescence spectroscopy, and photon purity measurements (g(2)). Combined with a specialized mount which must be provided by the user, the microscope can also be utilized for optically-detected magnetic resonance at room temperature.

Excitation sources:

• 532 nm DPSS continuous wave laser with 0-5 mW power. 

• NKT Photonics SuperK Chromotune pulsed excitation with spectral coverage from 400-1000 nm, 5 nm bandwidth.

Detectors:

• Excelitas SPCM-AQ4C 4-channel silicon avalanche single photon counting photodiode array, 400-1060 nm

• Single Quantum Superconducting Nanowire Single photon detectors: 2-channels optimized for 780 nm, 2 channels optimized for 650 nm, 2 channels optimized for 520 nm

Spectrometer: 

• Teledyne Princeton Instruments 0.75 m spectrometer with Pixis 1340x400BRX Camera. 0.02 nm resolution. Efficiency optimized for visible/NIR. 

Cryostat: 

• FourNine SideKick Pro, base temperature 4K (shared with VQLM)

*Construction of this instrument was supported by the National Science Foundation IMOD STC center (DMR-2019444) with cryogenic positioning upgrades provided by the UW Student Technology Fee and source and cryostat upgrade provided by the National Institute of Standards and Technology (60NANB23D202).

The Telecom Quantum Light Microscope (TQLM) is a confocal microscope designed for the analysis of light from single quantum emitters at both room and low temperature. Capabilities include device transmission/reflection, confocal imaging, photoluminescence spectroscopy, photon purity measurements (g(2)). 

Excitation sources:

• 532 nm DPSS continuous wave laser with 0-5 mW power. 

• NKT Photonics SuperK Chromotune pulsed excitation with spectral coverage from 400-1000 nm, 5 nm bandwidth.

• Santec High Performance Tunable Laser: Continuous wave, tunable laser from 1240-1680 nm. 

Detectors:

• Single Quantum Superconducting Nanowire Single photon detectors: 2-channels optimized for 1310-1550 nm. 

• Thorlabs InGaAs switchable gain amplified detector 

Spectrometer: 

• Teledyne Princeton Instruments 0.5 m spectrometer with Nirvana InGaAs detector. 

Cryostat: 

• FourNine SideKick Pro, base temperature 4K (shared with VQLM)

*Construction of this instrument was supported by the National Institute of Standards and Technology (60NANB23D202).

The Bluefors LD250 is a He-3/He-4 dilution refrigerator with a base temperature <10 mK. The system is capable of DC, RF, and optical device measurements and contains a superconducting magnet for applying fields in up to 3 axes. Fast sample exchange is possible through a bottom-loading probe mechanism. 

• 24 twisted pairs for DC signals (36 AWG PhBr with EM shielding) 

• 7 SCuNi-CuNi RF lines with 20 dB attenuators at 4K, Cold Plate, and MXC 

• Optical fiber access through sample probe 

• Cryogen-free 3D vector magnet (9T-1T-1T field)

• Bottom loading for fast sample exchange

Providing nanoscale scanning probe microscopy with atomic resolution.  Ideal for Cathodoluminescence (CL) Photoluminescence (PL), STM Light Emmission (STM-LE), Raman Spectroscopy.

• Up to 70% light collection efficiency

• Optical wavelengths from Deep UV to Far IR

• Integrated parabolic mirror with in-situ 3D nanopositioners

• Atomic Scale Resolution from 9K to 400K

• Simultaneous SPM and optical measurements