Software Open Access

HASEonGPU Software - High performance Amplified Spontaneous Emission on GPU

Hanel, Tim; Eckert, Carlchristian; Haenel, Tobias; Zenker, Erik; Albach, Daniel; Bussmann, Michael

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    <subfield code="a">HASEonGPU is open-source HPC software for calculating amplified spontaneous emission (ASE) flux in laser gain media. It supports the design and analysis of high-power laser systems by estimating ASE flux in configurable gain media using a Monte Carlo ray-tracing approach.
Release 2.0.0 introduces a redesigned Python API, for setting up custom laser simulation workflows and inspecting the development of gain and ASE flux over multiple iterations. The API includes library utilities for geometry construction, laser pumping, and time integration.
Additionally, HASEonGPU is the first scientific software project to adopt the new heterogeneous programming library alpaka 3 (https://github.com/alpaka-group/alpaka3). It leverages alpaka 3's redesigned programming interface and enhanced utilities, including SIMD abstractions, to support ASE calculations on CPU and GPU (CUDA, HIP) backends with improved performance portability.</subfield>
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Publication date:
June 19, 2026
DOI:
10.14278/rodare.4725

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Keyword(s):
laser laser-physics laser-construction high-intensity laser pulse high-power laser systems amplified spontaneous emission ASE gain media Monte Carlo ray tracing HPC GPU CUDA HIP MPI alpaka alpaka3 C++20 C++ Python heterogeneous computing distributed computing
Related identifiers:
Cites:
10.1016/j.cpc.2016.05.019, 10.1364/OE.17.003792
Documented by:
https://haseongpu.readthedocs.io/en/latest/
Identical to:
https://www.hzdr.de/publications/Publ-43533
Supplement to:
https://github.com/computationalradiationphysics/haseongpu, https://www.hzdr.de/publications/Publ-20690, https://www.hzdr.de/publications/Publ-24191
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License (for files):
GNU General Public License v3.0 or later

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