Two-chip power-scalable THz-generating semiconductor disk laser

TL;DR

This paper presents a compact, power-scalable two-chip THz laser source using intracavity frequency conversion in a multichip cavity, achieving 1 THz emission with high intracavity power at room temperature.

Contribution

It introduces a novel two-chip THz laser system with intracavity frequency conversion, enabling high power and room-temperature operation.

Findings

Achieved 1 THz output in a compact setup.

Demonstrated intracavity powers exceeding 500 W.

Showed room-temperature operation of the THz source.

Abstract

We demonstrate a compact two-chip terahertz-emitting vertical-external-cavity surface-emitting laser (TECSEL) source, which provides 1-THz output based on intracavity frequency conversion of dual-wavelength emission in a periodically-poled lithium niobate crystal. The type-I frequency conversion scheme at room temperature highly benefits from the power-scaling possibilities in a multichip cavity with intracavity powers in excess of 500 W.