# Dispersion enhanced tunability of laser-frequency response to its cavity-length change

## TL;DR

This paper demonstrates how modifying intracavity dispersion in a four-wave mixing regime can controllably enhance or suppress the laser's frequency response to cavity length changes, enabling applications in sensitive measurements and precision metrology.

## Contribution

It introduces a method to controllably tune the laser frequency response to cavity length changes by adjusting intracavity dispersion in Rb-based four-wave mixing.

## Key findings

- Response increased by at least 2.7 times
- Response can be drastically reduced
- Potential applications in sensitive measurements and metrology

## Abstract

We report on the controllable response of the lasing frequency to the cavity round-trip path change. This is achieved by modifying the dispersion of the intracavity medium in the four-wave mixing regime in Rb. We can either increase the response by at least a factor of $2.7$ or drastically reduce it. The former regime is useful for sensitive measurements tracking the cavity round trip length and the latter regime is useful for precision metrology.