High sensitivity two-frequency paired polarized interferometer in Faraday rotation angle measurement of ambient air with single-traveling configuration

Chu En Lin*, Chih Jen Yu, Ying Chang Li, Chien Chung Tsai, Chien Chou

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

10 Scopus citations

Abstract

High sensitivity detection on Faraday rotation and Verdet constant of ambient air under weak applied magnet field and single-pass configuration specimen is setup in which a two-frequency paired linear polarized interferometer (TPPI) coupled with balanced detector shown at shot-noise-limited detection is demonstrated. The Verdet constant of ambient air at 1.3× 10-6 rad/mT m and its sensitivity at 4.3× 10-8 rad/mT m were measured. Additionally, this method also is able to extend into a broad spectral range on Faraday rotation angle or Verdet constant measurement. Finally, the enhancement on detection sensitivity by integrating a Fabry-Ṕrot cavity into TPPI is discussed.

Original languageEnglish
Article number033101
JournalJournal of Applied Physics
Volume104
Issue number3
DOIs
StatePublished - 2008
Externally publishedYes

Fingerprint

Dive into the research topics of 'High sensitivity two-frequency paired polarized interferometer in Faraday rotation angle measurement of ambient air with single-traveling configuration'. Together they form a unique fingerprint.

Cite this