Part of the Oxford Instruments Group

Low-Temperature UV-SWIR Spectroscopy

Andor portfolio of high sensitivity detectors, highly modular spectrographs and temperature-controlled sample holders down to <3K (cryostats) provide cutting-edge technology blocks for home-builder spectroscopists. Researchers can tailor their detection configurations to capture and analyse the optical signatures of various samples under controlled environments with the highest degree of accuracy, using Photoluminescence, Raman, Absorption/Reflectance or Second Harmonic Generation (SHG) Spectroscopy techniques.

This flexibility provides scientists with analytical tools suitable for the study of a wide range of samples in the fields of advanced Material Science including semiconductors, quantum sources, thin films studies at the macro and micro-level, Chemical and Catalysis or Biophyics.

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Low-Temperature Spectroscopy Solutions Adapted to Your Needs

Our highly configurable solutions offer workhorse Research platforms to address analysis challenges associated with a wide range of samples, photon regimes and (multimodal) experimental configurations, from the macro to micro-scale.

High Sensitivity Cameras

  • CCDs, EMCCDs, InGaAs, ICCDs & sCMOS
  • UV-NIR and SWIR coverage
  • Single photon sensitivity
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Modular Spectrographs

  • 193 to 750 mm focal length
  • High resolution & throughput options
  • Multi input/outputs, multi-gratings turret
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Optical Cryostats

  • <3K - 500K options
  • LN2, He or Cryo-free™
  • Macro and micro (short working distance options)
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Selecting the right Camera for Low-Temperature Spectroscopy

Andor market-leading spectroscopy detectors offer best-in-class sensitivity performance from UV-NIR and SWIR, providing Researchers and OEMs tailored solutions to a wide variety of photon flux, spectral range coverage and/or time-resolution challenges.

High UV-NIR Sensitivity & Dynamic Range at a glance…

  iDus CCD Newton CCD Newton EMCCD
Best suited for • Low & High UV-NIR photon fluxes
• Large dynamic range
• Low & High UV-NIR photon fluxes
• Fast spectral rates
• Lowest UV-VIS photon fluxes
• Fast spectral rates
Matrix size (pixels) 1024 x 128
1024 x 256
2046 x 256
1024 x 256
2048 x 512
1600 x 200
1600 x 400
Pixel size (µm) 26 or 15 26 or 13.5 16
Peak QE 95% (VIS or NIR) 95% (VIS or NIR) 95% (VIS)
Min. Cooling (°C) -100 (with UltraVac™) -100 (with UltraVac™) -100 (with UltraVac™)
Min. dark current (e-/pix/s) 0.0004 0.0001 0.00007
Min. read noise (e-) 3 2.5 <1 (with EM gain)
Max. register well depth (e-) 1,000,000 1,000,000 1,300,000
Max. spectral rate (sps) 88 1,612 1,515
Low NIR etaloning option Yes (*) Yes (*) No
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(*) Front-illuminated versions have “zero” etaloning, back-illuminated versions with anti-fringing have “low” level of etaloning

High SWIR Sensitivity & Dynamic Range at a glance…

  iDus InGaAs-1.7 iDus InGaAs-2.2
Best suited for • Low & high SWIR photon fluxes (800 nm – 1.7 μm) • High SWIR photon fluxes (1.7 – 2.2 μm)
Matrix size (pixels) 512 x 1
1024 x 1
512 x 1
1024 x 1
Pixel size (µm) 25 or 50 25 or 50
Peak QE 85% (@1.3µm) 70% (@1.8µm)
Min. Cooling (°C) -90 (with UltraVac™) -90 (with UltraVac™)
Min. dark current (e-/pix/s) 10,700 5,000,000
Min. read noise (e-) 580 580
Max. register well depth (e-) 170,000,000 170,000,000
Max. spectral rate (sps) 193 193
Low NIR etaloning option n/a n/a
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ns to µs Time-Resolution portfolio at a glance...

  iStar Intensified CCD iStar Intensified sCMOS
Best suited for • Broadband, ns-µs gated spectra
• High dynamic range [low spectral rates]
• Multi-fibre acquisition
• Narrowband, ns-µs gated spectra
• Fastest spectral rates
• High dynamic range [high spectral rates]
• Fast multi-fibre acquisition
Matrix size (pixels) 1024 x 256
2048 x 512
2560 x 2160
Pixel size (µm) 26 and 13.5 6.5
Peak QE 25% (Gen 2)
48% (Gen 3)
Min. gating speed < 2 ns
Min. read noise (e-) <1 (with MCP gain)
Max. spectral rate (sps) 3,571 4,008
Min. Cooling (°C) -40 0
Min. dark current (e-/pix/s) 0.1 0.18
Max. register well depth (e-) 1,000,000 30,000 (pixel)
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Ultrafast spectral and multi-track rates portfolio at a glance...

  ZL41 Wave sCMOS Marana sCMOS
Best suited for • Low VIS-NIR photon flux
• Fastest spectral rates
• Narrowband spectra
• Low UV-VIS photon flux
• Fastest spectral rates
• Narrowband / Broadband spectra
Matrix size (pixels) 2560 x 2160
2048 x 2048
2048 x 2048
Pixel size (µm) 6.5 6.5 or 11
Peak QE 60% or 82% 95% (VIS)
Min. Cooling (°C) -10 -45 (with UltraVac™)
Min. dark current (e-/pix/s) 0.019 0.1
Min. read noise (e-) 0.9 1.2
Max. register well depth (e-) 30,000 (pixel) 85,000 (pixel)
Max. spectral rate (sps) 27,057 24,367
Low NIR etaloning option Yes (*) No
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(*) Front-illuminated versions have “zero” etaloning, back-illuminated versions with anti-fringing have “low” level of etaloning

Selecting the right Spectrograph for Low-Temperature Spectroscopy 

Andor spectrographs’ unique combination of modularity, range of optical/spectral performance, light coupling and detection options provide Researcher and OEMs with configurable platforms that can be tailored to tackle simple and more complex analytical challenges, year after year, experiment after experiment, without sacrificing accuracy and repeatability of measurements, at the touch of a button.

Grating (l/mm)
150 300 600 1200 1800 (Holo) 2400 (Holo)

Kymera 193i

Bandpass (nm) 902 445 215 98 56 46•6
Resolution (nm) 1.96 0.96 0.47 0.21 0.12 0.10•6

Kymera 328i

Bandpass (nm) 542 268 131 61 41 29
Resolution (nm) * 0.88⟶0.62 0.44⟶0.31 0.21⟶0.15 0.10⟶0.07 0.06⟶0.04 0.05⟶0.04

Shamrock 500i

Bandpass (nm) 357 177 86 40 26 19
Resolution (nm) 0.52 0.26 0.13 0.06 0.04 0.03

Shamrock 750

Bandpass (nm) 242 120 59 28 18 14
Resolution (nm) 0.35 0.18 0.09 0.04 0.03 0.02

* Spectral improvement up to 30% with patented Adaptive Focus™ without bandpass sacrifice

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Selecting the right Optical Cryostat for Low-Temperature Spectroscopy 

Andor’s market-leading optical cryostats are the most efficient and economical for a wide range of spectroscopy applications. Our range for Macro and Micro-analysis are available with liquid nitrogen (LN2), liquid helium and Cryofree™ technologies, sample in vacuum and sample in exchange gas systems, and with sample temperatures from <2.2 K to 500 K.



* With 40m3 Rotary Pump Option
** Typical, in conjunction with loca vibration mitigation practices

Low Temperature Spectroscopy Applications


Non-invasive probing techniques like Raman, Photoluminescence, or Absorption can provide very specific information on the structural (including presence of defects or behaviour under strain/stress), electronics behaviour or light emission properties of a wide range of advanced semiconductor structures.

These range from low dimensional nanocrystals, Transition metal dichalcogenide (TMDs) or organic semiconductors (e.g. OLEDs) to more complex microelectronics and light harvesting structures.

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Application of optical spectroscopy in quantum science include the characterisation of electronics and optical properties of single-photon sources such as Quantum Dots (QDs) and nitrogen vacancy (NV) in diamond, as well as the study of how these sources can interface with systems relevant to quantum communication.

Andor imaging EMCCDs and gated ICCDs detectors are also at the forefront of quantum science research, in particular photon-entanglement experiments.

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Advanced material science plays a key role in the development of efficient renewable energy harvesting systems including solar/photovoltaic cells, as well the development of more efficient energy storage solutions which include the implementation of novel nano/micro-structures and novel catalysts in batteries.

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Reaction Monitoring and Catalysis

The spectroscopic study of the transformation processes of chemical species (reactants) to new chemical species (products) with different structure/arrangement/properties.

Chemical reaction types include synthesis, decomposition, displacement (a more active element displaces another less active element from a compound), redox and isomerisation.

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Photochemistry & Photophysics

The study of the effect of light absorption (typically in the UV-IR region) by chemical species, resulting in chemical or physical property changes.

It includes the analysis of the transformation processes in molecules, specifically studying their transient excited states /energy transfer processes, as characterised through a Jablonski diagram, on timescales ranging from millisecond to picoseconds.

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Customer Publications

Author Title Year
Szymura et al Low-Temperature Photoluminescence Dynamics Reveal the Mechanism of Light Emission by Colloidal CuInS2... 2023
Sonmez et al The investigation of photoluminescence properties in InxGa1-xN/GaN multiple quantum wells structures with varying... 2022
Ma et al Green emission in Fe- and Mn-doped ZnO nanowires studied by magneto-photoluminescence 2022
Lin et al Optical suppression of energy barriers in single molecule-metal binding 2022
Godiksen et al Impact of indirect transitions on valley polarization in WS2 and WSe2 2022
Kahle et al Static and Dynamic Disorder of Charge Transfer States Probed by Optical Spectroscopy 2022
Bossanyi et al In optimized rubrene-based nanoparticle blends for photon upconversion, singlet energy collection outcompetes... 2022
Ranasinghe et al Investigating the donor:acceptor ratio in thermally activated delayed fluorescence light-emitting macromolecules 2022
Kroh et al Identifying the Signatures of Intermolecular Interactions in Blends of PM6 with Y6 and N4 Using Absorption Spectroscopy 2022
Tian et al Effect of carbon nanotube pattern on the laser lift off and quantum efficiencies of near UV vertical LEDs 2021
Filippetti et al Fundamentals of tin iodide perovskites 2021
Schötz et al Double peak emission in lead halide perovskites by self-absorption 2020