# Double-chirped mirrors expand the bandwidth of infrared frequency combs

## TL;DR

This paper introduces a new method using double-chirped mirrors to improve the performance of infrared lasers for precise measurements.

## Contribution

The use of double-chirped Bragg mirrors for dispersion compensation in quantum cascade lasers is novel.

## Key findings

- Double-chirped mirrors enable stable and broadband frequency combs in mid-infrared lasers.
- The new scheme enhances the bandwidth for high-precision spectroscopy and metrology applications.

## Abstract

A novel dispersion-compensation scheme based on double-chirped Bragg mirrors is implemented in a mid-infrared quantum cascade laser. As a result, stable and broadband frequency combs are generated, which are indispensable for high-precision applications in spectroscopy and metrology.