- Titel
- Modeling nonlinear optical interactions of focused beams in bulk crystals and thin films
- Untertitel
- a phenomenological approach
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-967549
- Quellenangabe
- Journal of applied physics
Erscheinungsjahr: 2023
Jahrgang: 133
E-ISSN: 1089-7550
Artikelnummer: 123105 - Erstveröffentlichung
- 2023
- Abstract (EN)
- Coherent nonlinear optical μ-spectroscopy is a frequently used tool in modern material science as it is sensitive to many different local observables, which comprise, among others, crystal symmetry and vibrational properties. The richness in information, however, may come with challenges in data interpretation, as one has to disentangle the many different effects like multiple reflections, phase jumps at interfaces, or the influence of the Guoy-phase. In order to facilitate interpretation, the work presented here proposes an easy-to-use semi-analytical modeling Ansatz, which bases upon known analytical solutions using Gaussian beams. Specifically, we apply this Ansatz to compute nonlinear optical responses of (thin film) optical materials. We try to conserve the meaning of intuitive parameters like the Gouy-phase and the nonlinear coherent interaction length. In particular, the concept of coherence length is extended, which is a must when using focal beams. The model is subsequently applied to exemplary cases of second- and third-harmonic generation. We observe a very good agreement with experimental data, and furthermore, despite the constraints and limits of the analytical Ansatz, our model performs similarly well as when using more rigorous simulations. However, it outperforms the latter in terms of computational power, requiring more than three orders less computational time and less performant computer systems.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift „Journal of applied physics” des American Institut of Physics erschienen ist.
DOI: 10.1063/5.0136252 - Freie Schlagwörter (EN)
- Interference, Crystalline solids, Optical materials, Spectroscopy, Thin films, Nonlinear optics, Optical phase matching, Third-harmonic generation, Second harmonic generation, Gaussian beam
- Klassifikation (DDC)
- 530
- Verlag
- American Institut of Physics, Melville, NY
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft (DFG)
SFB 1415: Chemie der synthetischen zweidimensionalen Materialien
(SFB 1415)
ID: 417590517 - Deutsche Forschungsgemeinschaft (DFG)
FOR 5044: Periodische niedrigdimensionale Defektstrukturen in polaren Oxiden
ID: 426703838 - Deutsche Forschungsgemeinschaft (DFG)
EXC 2147
Komplexität und Topologie in Quantenmaterialien
(CT.QMAT)
ID: 390858490 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-967549
- Veröffentlichungsdatum Qucosa
- 18.06.2025
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
CC BY 4.0