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. Shared with TQLM

Detectors:

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

• Single Quantum Superconducting Nanowire Single photon detectors (SNSPDs): 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 TQLM

Filters: 

• Excitation filters: 

  • Standard

    • 532nm narrow bandpass laser cleanup (flip mount)

    • 532nm longpass dichroic. 

  • Post holders are set up for a user-supplied excitation filter and the dichroic is on a magnetic mount which can be replaced with a user-supplied optic

• Collection filters:

  • Standard (all on flip mounts)

    • ND stack with 0.3, 0.6, 1, 2, 4 OD options

    • 709/167 bandpass filter optimized for NV

    • 542 longpass filter

  • Post holder set up for user-supplied collection filter.

*Construction of this instrument with 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 low-T upgrade (FourNine) provided by the National Institute of Standards and Technology (60NANB23D202). The SNSPDs are shared with the Northwest Quantum Emitters Microscope, funded by the Murdock Foundation.

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:

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

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

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

Filters: 

• Excitation filters: 

  • Standard

    • ND stack with 1, 2, 4 OD options

• Collection filters:

  • Standard (all mounted on filter wheel)

    • 1000nm long pass

    • 1150nm long pass

    • 1500nm long pass

  • filter wheel set up for user-supplied collection filter.

*Construction of this instrument was supported by the National Institute of Standards and Technology (60NANB23D202). The NKT SuperK laser shared with the VQLM and  is partially supported by the NSF STC IMOD. The SNSPDs are shared with the Northwest Quantum Emitters Microscope, funded by the Murdock Foundation.

The Bluefors LD250 is a He-3/He-4 dilution refrigerator with a base temperature <10 mK. The system is capable of DC snf RF measurements.  Optical device measurement capabilities are under development. The system includes 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

*Installation of this instrument with provided by the National Institute of Standards and Technology (60NANB23D202). 

The PanScan Lumin-SLT scanning probe microsope provides 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

Construction of this instrument was supported by the Murdock Foundation