| Issue |
J. Eur. Opt. Society-Rapid Publ.
Volume 21, Number 2, 2025
|
|
|---|---|---|
| Article Number | 53 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/jeos/2025051 | |
| Published online | 19 December 2025 | |
Short Communication
High-energy wavelength-tunable pulse bursts: on the commutability of spectral filtering and burst-mode amplification
1
Photonics Institute, TU Wien, Gusshausstrasse 27/387, 1040 Vienna, Austria
2
Center for Physical Sciences & Technology, Savanoriu Ave. 231, LT-02300 Vilnius, Lithuania
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
14
October
2025
Accepted:
27
November
2025
Abstract
We discuss the commutability of burst generation and spectral filtering, as predicted by linear time-invariant (LTI) signal theory. While LTI indicates that spectral filtering may be applied either before or after burst formation, our experimental investigation shows that this equivalence is not valid in the presence of strong burst-mode amplification. Front-end spectral filtering reduces the seed energy, impacting the nonlinear gain dynamics of the optical amplifier, leading to incomplete gain depletion and the formation of a parasitic background. As a consequence, the spectral filter placement influences the achievable efficiency and background suppression, making it a critical design choice for high-energy wavelength-tunable sources.
Key words: Ultrashort Laser Pulses / Burst-Mode / Spectral Filtering / Chirped-Pulse Amplification
© The Author(s), published by EDP Sciences, 2025
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