2011年6月20日
Modulated near-field spectral extraction of broadband mid-infrared signals with a ceramic light source
Optics Express
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 19
- 号
- 13
- 開始ページ
- 12469
- 終了ページ
- 12479
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OE.19.012469
In order to obtain broadband near-field infrared (IR) spectra, a Fourier-transform IR spectrometer (FT-IR) and a ceramic light source were used with a scattering-type scanning near-field optical microscope (s-SNOM). To suppress the background (far-field) scattering, the distance between the scattering probe and the sample was modulated with frequency ω by a piezo-electric actuator, and the ω component was extracted from the signal with a lock-in detection. With ω=30 kHz, a peak-to-peak modulation amplitude of 198 nm, and a probe with smooth surface near the tip, broadband near-field IR spectra could be obtained in the 1200-2500 cm-1. © 2011 Optical Society of America.
- リンク情報
- ID情報
-
- DOI : 10.1364/OE.19.012469
- eISSN : 1094-4087
- PubMed ID : 21716486
- SCOPUS ID : 79959441885