AI Article Synopsis
- Electro-optic (EO) modulation devices use electric fields to control optical beams, but they can be influenced by unwanted effects that alter light polarization.
- Even minor changes in the EO material's properties can cause significant variations in the optical signal's amplitude and phase, leading to instability.
- A new analysis method is introduced that mitigates these fluctuations, ensuring the EO device operates effectively, with potential applications in detecting and measuring electric fields.
Article Abstract
Electro-optic (EO) modulation devices, which utilize an external electric field to modulate a beam of optical radiation, are strongly affected by parasitic effects, which change the polarization state of the optical beam. As a result, very small changes in the birefringence or optical path length within the EO material can result in very large fluctuations of the amplitude and phase of the optical modulation signal. A method of actively analyzing the modulated beam is described and demonstrated, which eliminates these fluctuations and keeps the modulation device stably operating at its peak responsivity. Applications to electric field detection and measurements are discussed.
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| http://dx.doi.org/10.1364/ao.46.006636 | DOI Listing |
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