Details

Autor(en) / Beteiligte

• Chelwani, N.
• Hoch, D.
• Jost, D.
• Botka, B.
• Scholz, J.-R.
• Richter, R.
• Theodoridou, M.
• Kretzschmar, F.
• Böhm, T.
• Kamarás, K.
• Hackl, R.

Titel

Off-axis parabolic mirror optics for polarized Raman spectroscopy at low temperature

Ist Teil von

• Applied physics letters, 2017-05, Vol.110 (19)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2017

Link zum Volltext

Quelle

AIP Journals Complete

Beschreibungen/Notizen

• We report the development of a detection optics for the integration of Raman scattering and scanning probe microscopy at low temperature based on a parabolic mirror. In our set-up, half of the paraboloid mirror covers a solid angle of π corresponding to a numerical aperture of N.A. ≈ 0.85. The optical system can be used for far- and near-field spectroscopy. In the far field, the polarizations can be maintained to within 80%–90%. In combination with a scanning microscope (AFM/STM), tunneling or near-field experiments are possible with less than 10% loss of aperture. Our set-up provides ideal conditions for the future development of tip-enhanced Raman spectroscopy at low temperature.