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Updated: Jul 7, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Summary
Researchers controlled laser transverse modes using an asymmetric Michelson mirror (MM). Adjusting the phase delay between the MM arms switched laser oscillation between Laguerre-Gauss modes.
Area of Science:
- Optics and Photonics
- Laser Physics
- Quantum Optics
Background:
- Laser cavities support various transverse modes, influencing beam characteristics.
- Michelson mirrors (MM) are optical components used in interferometry and laser design.
- Controlling transverse mode selection is crucial for many laser applications.
Purpose of the Study:
- To calculate and compare effective reflectivities of Laguerre-Gauss modes on an asymmetric Michelson mirror (MM).
- To demonstrate the switching of laser transverse modes by controlling phase delay in a three-mirror laser configuration.
- To investigate the role of MM in transverse mode selection.
Main Methods:
- Calculation of effective reflectivities for the first three Laguerre-Gauss modes.
- Utilizing a power ratio to compare mode reflectivities.
- Implementing a three-mirror laser configuration with an asymmetric MM.
- Adjusting the phase delay between the two arms of the MM.
Main Results:
- Effective reflectivities of the first three Laguerre-Gauss modes were calculated and compared.
- Laser oscillation was successfully switched between different transverse modes.
- The phase delay between the MM arms was identified as the key control parameter for mode switching.
Conclusions:
- The asymmetric Michelson mirror (MM) provides a mechanism for effective reflectivity control.
- Laser transverse mode selection can be achieved by manipulating the phase delay in an MM-based laser cavity.
- This method offers a simple way to switch between Laguerre-Gauss modes in laser systems.
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