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Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
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Related Experiment Video

Updated: May 8, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

High-power asynchronous midinfrared optical parametric oscillator frequency combs.

Zhaowei Zhang¹, Xiaohui Fang, Tom Gardiner

¹Scottish Universities Physics Alliance, Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot Watt University, Riccarton, Edinburgh, UK. z.zhang@hw.ac.uk

|August 14, 2013

Summary

This summary is machine-generated.

Researchers developed a new method for stabilizing two high-power infrared frequency combs. This breakthrough enables advanced dual-comb spectroscopy applications and can be adapted for other wavelengths.

More Related Videos

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Related Experiment Videos

Last Updated: May 8, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

Optics and Photonics
Spectroscopy
Quantum Electronics

Background:

Frequency combs are crucial for precise measurements.
Mid-infrared spectroscopy requires stable, high-power light sources.
Carrier-envelope offset (CEO) frequency stabilization is essential for comb applications.

Purpose of the Study:

To introduce a novel stabilization scheme for dual, broadband, asynchronous frequency combs.
To achieve high-power, CEO-frequency-stabilized operation at 3.3 μm.
To enable advanced mid-infrared dual-comb spectroscopy.

Main Methods:

Utilizing a single synchronously pumped optical parametric oscillator.
Implementing shared components for mid-infrared generation and CEO-frequency detection.
Independently stabilizing two frequency comb channels with up to 5 kHz repetition frequency difference.

Main Results:

A pair of 100 mW average power, CEO-frequency-stabilized, broadband, asynchronous frequency combs operating at 3.3 μm.
Independent stabilization of two comb channels.
Demonstrated compatibility with mid-infrared dual-comb spectroscopy.

Conclusions:

The new stabilization scheme provides a versatile and powerful tool for mid-infrared spectroscopy.
The approach is adaptable to other wavelengths.
This work advances the capabilities of frequency comb technology for dual-comb applications.