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Updated: Jun 27, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Transfer of orbital angular momentum in a multimode parametric oscillator
B Coutinho Dos Santos1, A Z Khoury, J A O Huguenin
1Instituto de Física-Universidade Federal Fluminense, 24210-346 Niterói-RJ, Brazil.
This study explores orbital angular momentum (OAM) transfer in a type-II optical parametric oscillator (OPO). Researchers generated diverse transverse modes with OAM in downconverted beams using a Laguerre-Gaussian beam pump.
Area of Science:
- Quantum Optics
- Laser Physics
- Photonics
Background:
- Optical parametric oscillators (OPOs) are crucial for generating light with specific properties.
- Orbital angular momentum (OAM) offers unique characteristics for light manipulation.
- Understanding OAM transfer in nonlinear optical processes is key for advanced applications.
Purpose of the Study:
- To investigate the transfer of orbital angular momentum (OAM) in a type-II optical parametric oscillator (OPO).
- To explore the generation of various transverse modes carrying OAM in downconverted OPO beams.
- To analyze different operational regimes and their impact on OAM modes.
Main Methods:
- Utilizing a type-II optical parametric oscillator (OPO).
- Pumping the OPO with a first-order Laguerre-Gaussian beam.
- Operating the OPO well above the oscillation threshold.
Main Results:
- Successful production of different transverse modes on the downconverted beams.
- Observation of diverse transverse modes exhibiting orbital angular momentum (OAM).
- Attainment of various operation regimes within the OPO.
Conclusions:
- Type-II OPOs can effectively transfer orbital angular momentum (OAM).
- The OPO system demonstrates versatility in generating OAM-carrying modes.
- Rich mode structures with OAM are achievable in this nonlinear optical setup.
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