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Related Experiment Video

Updated: Jul 10, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Compensating group-velocity mismatch in parametric frequency generation.

Usman K Sapaev¹, Gaetano Assanto

¹Nonlinear Optics and OptoElectronics Lab, INFN and Consorzio Nazionale Interuniversitario Struttura della Materia (CNISM), University Roma Tre, Via della Vasca Navale 84, 00146, Rome, Italy.

|October 17, 2007

Summary

This summary is machine-generated.

A new method uses frequency-selective mirrors to fix speed differences in harmonic generation. This technique is effective for multipass frequency doubling in lithium niobate crystals.

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Area of Science:

Nonlinear Optics
Laser Physics
Materials Science

Background:

Group-velocity mismatch (GVM) limits efficiency in nonlinear optical processes like harmonic generation.
Efficient harmonic generation is crucial for various laser applications, including spectroscopy and material processing.
Existing compensation methods can be complex or limited in scope.

Purpose of the Study:

To propose and numerically investigate a simple scheme for compensating group-velocity mismatch.
To demonstrate the effectiveness of frequency-selective mirrors for harmonic generation.
To apply the compensation scheme to multipass frequency doubling in lithium niobate.

Main Methods:

Numerical investigation of a novel compensation scheme.
Utilizing frequency-selective mirrors to control phase matching.
Simulating multipass frequency doubling in lithium niobate (LiNbO3).

Main Results:

The proposed scheme effectively compensates for group-velocity mismatch.
Significant improvements in conversion efficiency for frequency doubling were observed.
The method proved effective for multipass configurations in LiNbO3.

Conclusions:

Frequency-selective mirrors offer a simple and effective solution for GVM compensation.
The developed approach enhances the efficiency of harmonic generation, particularly frequency doubling.
This method has potential applications in advanced laser systems requiring efficient frequency conversion.