Dresden 2026 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 26: Poster II

HL 26.56: Poster

Mittwoch, 11. März 2026, 09:30–11:30, P1

Impulsive Stimulated Raman Scattering: Highspeed Detection Strategies — •Laura Hüllmandel, Julia A. Lang, and Georg Herink — Universität Bayreuth

Pulse interaction of femtosecond pulses inside Ti:Sapphire lasers is mediated by Raman-active modes with terahertz beats causing bound states of solitons at fixed time delays [1]. In this contribution, we employ extra-cavity impulsive stimulated Raman scattering (ISRS) to quantitatively determine the phase-shifts involved to further our understanding of the intra-cavity formation of so-called “soliton molecules". We compare spectral-shift and interferometric methods for phase-sensitive detection and achieve efficient noise reduction of multiplicative 1/f noise sources – where lock-in amplification is ineffective – through rapid scan-averaging and balanced detection.

[1] A. Völkel et al., “Intracavity Raman Scattering Couples Soliton Molecules with Terahertz Phonons.“, Nature Communications 13.1 (2022).

Keywords: Raman Scattering; Impulsive Stimulated Raman Scattering; Soliton Molecules