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 language | English |
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Article number | 033101 |
Journal | Journal of Applied Physics |
Volume | 104 |
Issue number | 3 |
DOIs | |
State | Published - 2008 |
Externally published | Yes |