Orbital angular momentum impact on light scattering by phonons tested experimentally

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00619312" target="_blank" >RIV/68378271:_____/25:00619312 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0366078" target="_blank" >https://hdl.handle.net/11104/0366078</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0252050" target="_blank" >10.1063/5.0252050</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Orbital angular momentum impact on light scattering by phonons tested experimentally

Popis výsledku v původním jazyce

Polarized Raman spectra of piezoelectric bismuth germanate single crystal were recorded using vortex light in order to verify the predicted symmetry selection rules for Raman scattering of photons with nonzero orbital angular momentum. First, the phonon spectrum is fully characterized by the infrared reflectivity and Raman scattering with ordinary light. Then, vortex light Raman spectra were compared with the ordinary ones, but no influence of the orbital momentum on the Raman spectra of Bi4Ge3O12 was observed. In particular, we experimentally negate the theoretical prediction that Raman scattering using vortex light can yield frequencies of the silent optic modes of Bi4Ge3O12. We also have not seen evidence for the predicted symmetry-lowering of the Raman scattering tensors of E modes. We propose that the orbital momentum effects are inaccessible to the ordinary Raman spectroscopy experiments because of the tiny magnitudes of typical phonon coherence lengths

Název v anglickém jazyce

Orbital angular momentum impact on light scattering by phonons tested experimentally

Popis výsledku anglicky

Polarized Raman spectra of piezoelectric bismuth germanate single crystal were recorded using vortex light in order to verify the predicted symmetry selection rules for Raman scattering of photons with nonzero orbital angular momentum. First, the phonon spectrum is fully characterized by the infrared reflectivity and Raman scattering with ordinary light. Then, vortex light Raman spectra were compared with the ordinary ones, but no influence of the orbital momentum on the Raman spectra of Bi4Ge3O12 was observed. In particular, we experimentally negate the theoretical prediction that Raman scattering using vortex light can yield frequencies of the silent optic modes of Bi4Ge3O12. We also have not seen evidence for the predicted symmetry-lowering of the Raman scattering tensors of E modes. We propose that the orbital momentum effects are inaccessible to the ordinary Raman spectroscopy experiments because of the tiny magnitudes of typical phonon coherence lengths

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GX19-28594X" target="_blank" >GX19-28594X: Feroelektrické skyrmiony</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

APL Photonics

ISSN

2378-0967

e-ISSN

2378-0967

Svazek periodika

10

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

046106

Kód UT WoS článku

001466285400001

EID výsledku v databázi Scopus

2-s2.0-105002705162