Work

Wavefront improvement in Nd: YAG zigzag slab amplifier by optimizing pump beam configuration and mechanical stress

Year: 2026

Type: article

Abstract: To optimize the wavefront quality in end-pumped Nd: YAG slab amplifier systems, the effects of three important parameters- pump beam configuration, torque-induced stress during slab chamber assembly, and increased convective heat-transfer coefficient- were optimized. As a result, the fluctuating optical path difference decreased from over 8.7 μm to 2 μm at pump power of 2.4 kW. Also, when the BQ parameter was calculated at a pump power of about 3 kW, it decreased from 12.22 to 4.35 in configurations 1 and 2. The optical path difference was evaluated using interferometric techniques, which provide high sensitivity for optimizing the parameters of the zigzag slab-pumping module. The optimized amplifier module results are in good agreement with the experimental observations, clearly validating the proposed approach.

Source: Scientific Reports

DOI: 10.1038/s41598-026-67293-4

Authors: Saeed Talesh Alikhani, Elnaz Irani, Mohammad Mahdi Majidof

Institutions: Tarbiat Modares University, Shahid Beheshti University

Language: English

Topic: Solid State Laser Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funder: Tarbiat Modares University