Related Experiment Video
Updated: Feb 6, 2026

09:38
Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
12.7K
Ultra-sensitive mid-infrared emission spectrometer with sub-ns temporal resolution
Optics Express
|August 18, 2018
Summary
This study demonstrates a new mid-infrared spectrometer using a superconducting nanowire single-photon detector (SNSPD). It achieves high sensitivity for surface adsorbates, paving the way for advanced molecular science applications.
Area of Science:
- Spectroscopy
- Materials Science
- Quantum Technology
Background:
- Mid-infrared spectroscopy is crucial for analyzing molecular vibrations.
- Superconducting Nanowire Single-Photon Detectors (SNSPDs) offer unparalleled sensitivity for photon detection.
Purpose of the Study:
- To evaluate the performance of a mid-infrared emission spectrometer.
- To assess the capabilities of an amorphous tungsten silicide (a-WSi) SNSPD in this spectral range.
- To explore applications in surface adsorbate analysis.
Main Methods:
- Utilized laser-induced fluorescence spectroscopy.
- Operated the spectrometer in the 1.5 to 6 micrometer wavelength range.
- Employed an a-WSi SNSPD for photon detection.
Main Results:
- Achieved sub-monolayer sensitivity for surface adsorbates.
- Demonstrated sub-nanosecond temporal resolution.
- Validated the performance of the SNSPD in the mid-infrared spectrum.
Conclusions:
- The SNSPD-based mid-infrared spectrometer shows significant potential.
- Future improvements can enhance its capabilities.
- Applications in molecular science and surface analysis are promising.
More Related Videos
Related Concept Videos
NMR Spectrometers: Resolution and Error Correction
1.1K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.1K
¹H NMR of Labile Protons: Temporal Resolution
1.7K
Protons bonded to heteroatoms such as nitrogen and oxygen exhibit a range of chemical shift values. This is due to the varying degree of hydrogen bonding between the proton and the heteroatom in other molecules. The extent of hydrogen bonding affects the electron density around the proton, thereby giving different chemical shift values for the protons in the proton NMR spectrum.
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
1.7K
Emission Spectra
76.4K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
76.4K
IR Spectrometers
2.6K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
2.6K
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
1.3K
At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
1.3K
Mass Spectrometers
9.0K
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
9.0K

