Work

Phase and amplitude pre-shaping for a high-power ps-wedged thin-disk amplifier

Year: 2026

Type: article

Abstract: Wedged thin-disk amplifiers offer a compact, monolithic alternative to conventional thin-disk multipass systems. As a trade-off, the wedged shape inherently introduces complex thermal lensing and phase distortions, degrading beam quality at high output powers. We demonstrate a spatial light modulator based adaptive phase and amplitude correction system for pre-compensation of aberrations. Utilizing the large acceptance angle of the wedged thin-disk, the adaptive element can be introduced before the optical amplification. Starting with M 2 ≃ 1.2 at 25 W, we obtain near diffraction limited beam quality M 2 = 1.3 for 150 W of output power, estimate a good beam quality (M 2 < 2) for up to 250 W, and reach up to 330 W of average power. This demonstrates the readiness of the technology for modern industrial and scientific applications.

Source: Optics Express

DOI: 10.1364/oe.613864

Authors: Pirmin Schweizer, Raoul-Amadeus Lorbeer, Jochen Speiser, Thomas Dekorsy

Institution: Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

Language: English

Topic: Solid State Laser Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

OpenAlex ID: W7220903864

FWCI:

Cites: 12

Cited by:

Related to: 10