Related Experiment Video
Updated: Jan 19, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Mid-infrared dual-comb spectroscopy with absolute frequency calibration using a passive optical reference
Abstract:
We demonstrate an absolute-frequency-calibrated mid-infrared dual-comb spectrometer by using a reference absorption cell. The source is based on a singly-resonant OPO containing two MgO:PPLN crystals in a common ring cavity, synchronously pumped by two mode-locked Yb-fiber lasers. The repetition-rate of the two pumps are stabilized while their offset frequencies and the OPO cavity length are not actively controlled. The reference spectrum is used to correct the frequency fluctuations in the sample spectrum providing a high-quality averaged spectrum with spectral resolution of 6 GHz and calibration precision of 120 MHz, without adding any complexity to the experimental setup or signal processing.
Related Concept Videos
06:42Generation and Coherent Control of Pulsed Quantum Frequency Combs
09:38Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Infrared Spectroscopy
This experiment will demonstrate the use of infrared (IR) spectroscopy (also known as vibrational spectroscopy) to elucidate the identity of an unknown compound by identifying the functional group(s) present. IR spectra will be obtained on an IR spectrometer using the attenuated total reflection (ATR) sampling technique with a neat sample of the...
09:39In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
14:28Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
06:54Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems
