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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Optical pulsing in a resonator with a highly dispersive nonlinearity
U Bortolozzo1, M Durero, S Residori
1INLN, Université de Nice-Sophia Antipolis, CNRS, Valbonne, France. umberto.bortolozzo@inln.cnrs.fr
Optics Letters
|February 21, 2012
Summary
Generating optical pulses with unique features is achieved by introducing an intracavity Doppler shift. The pulse characteristics depend on the slow/fast-light properties and the Doppler shift direction, influencing group delay.
Area of Science:
- Nonlinear optics
- Quantum optics
- Optical physics
Background:
- Nonlinear optical resonators are crucial for generating and manipulating light.
- Dispersive media exhibit frequency-dependent refractive indices, leading to phenomena like slow and fast light.
- Intracavity effects can significantly alter optical pulse characteristics.
Purpose of the Study:
- To investigate the generation of optical pulse trains using an intracavity Doppler shift in a nonlinear dispersive resonator.
- To explore the relationship between pulse features and the slow/fast-light response of the medium.
- To analyze the influence of the Doppler shift direction on cavity transmission and pulse shaping.
Main Methods:
- Implementing an intracavity Doppler shift within a resonator containing a highly dispersive nonlinear medium.
- Utilizing optical resonators designed to support nonlinear interactions.
- Analyzing cavity transmission spectra and output pulse shapes.
Main Results:
- Successful generation of optical pulse trains.
- Observed asymmetric cavity transmission.
- Demonstrated distinct pulse shape modifications based on the Doppler shift direction (positive/negative group delay).
Conclusions:
- The intracavity Doppler shift provides a method for generating tunable optical pulses.
- The slow/fast-light properties of the nonlinear medium directly influence the generated pulse characteristics.
- The direction of the Doppler shift is a critical parameter for controlling pulse shaping and cavity response.
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