Coherent Cerenkov radiation and laser oscillation in a photonic crystal

TL;DR

This paper explores how photonic crystals can be used to generate highly coherent laser radiation by matching optical phase velocity with electron beam velocity, supported by theoretical analysis.

Contribution

It introduces a novel method for laser generation using photonic crystals to achieve coherence and power, with detailed theoretical insights into startup dynamics.

Findings

Photonic crystals enable coherent laser emission with free electron beams.

Theoretical analysis of startup dynamics and coherence properties.

Phase velocity matching is key to gain in the proposed laser.

Abstract

We demonstrate that photonic crystals can be used to generate powerful and highly coherent laser radiation when injecting a beam of free electrons. Using theoretical investigations we present the startup dynamics and coherence properties of such laser, in which gain is provided by matching the optical phase velocity in the photonic crystal to the velocity of the electron beam.