Journal Article

PUBDB-2024-05520

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Improved temporal characteristics for post-compressed pulses via application-tailored nonlinear polarization ellipse rotation

Escoto, E. (Corresponding author)DESY* ; Pressacco, F.XFEL.EU*DESY* ; Jiang, Y.CFEL*DESY* ; Rajhans, S.DESY* ; Khodakovskiy, N.DESY* ; Hartl, I.DESY* ; Seidel, M.DESY* ; Heyl, C.DESY* ; Tuennermann, H.DESY*

2024
Optica Publishing Group Washington, DC

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Please use a persistent id in citations: doi:10.1364/OL.539646  doi:10.3204/PUBDB-2024-05520

Abstract: Intense ultrashort laser pulses with high temporal quality are essential for fundamental science. Nonlinear polarization ellipse rotation (NER) is one way to ensure this high temporal quality, by suppressing weaker signals beyond the duration of the main pulse up to a few orders of magnitude.Post-compression schemes have revolutionized ultrafast lasers, enabling the generation of pulses with durations beyond the limit supported by laser gain media.However, high compression ratios lead to the formation of new pre- and post-pulses. Both NER and post-compression depend on the optical Kerr effect. This makes the combination of the two in a single setup both advantageous and straightforward.While NER cannot suppress the new pre- and post-pulses generated in post-compression, we show via simulations and experimental data that by combining the two, it is possible to shape the output spectrum and counteract temporal contrast degradation.

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Contributing Institute(s):

1. Photonics Research and Development (FS-PRI)
2. Laser Forschung und Entwicklung (FS-LA)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)
3. InternLabs-0011 - HIR3X - Helmholtz International Laboratory on Reliability, Repetition, Results at the most advanced X-ray Sources (2020_InternLabs-0011) (2020_InternLabs-0011)
4. BMBF-13N16678 - Milliwatt-level efficient gas harmonic EUV source (MEGA-EUV) Multi-pass cell development for post-compression and spectral tuning (BMBF-13N16678) (BMBF-13N16678)

Experiment(s):

1. FLASH Beamline PG2 (FLASH)
2. FLASH Beamline PG1 (FLASH)
3. FLASH 2020+ Project

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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