Polarization properties and frequency stabilization of an internal mirror He-Ne laser emitting at 543.5 nm wavelength

Brand, Uwe; Mensing, F.; Helmcke, J.

doi:10.1007/bf00694192

Cited by 19 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As light source we employed a continuous randomly polarized He-Ne laser of 5 mW and wavelength 543 nm (Melles-Griot 05-LGR-193). These are He-Ne lasers with internal mirrors attached to the tube, which operate at two orthogonally linearly polarized modes where the orientation of the linear state rapidly changes in time on a nanosecond scale, thus resulting in a light source with random polarization [43]. In all experiments, the laser was left turned on for at least one hour to achieve a stable output.…”

Section: Methodsmentioning

confidence: 99%

Extending the degree of polarization concept to higher-order and orbital angular momentum Poincaré spheres

Marco

Sánchez-López

Hernández-García

et al. 2022

J. Opt.

View full text Add to dashboard Cite

In this work, the density matrix formalism that describes any standard polarization state (fully or partially polarized) is applied to describe vector beams and spatial modes with orbital angular momentum (OAM). Within this framework, we provide a comprehensive description of the mapping between the corresponding Poincaré spheres (PSs); namely: the polarization PS, the higher-order PS (HOPS) and the orbital angular momentum PS (OAMPS). Whereas previous works focus on states located on the surface of these spheres, here we study vector and scalar modes lying inside the corresponding PS. We show that they can be obtained as the incoherent superposition of two orthogonal vector (or scalar) modes lying on the corresponding sphere surface. The degree of polarization (DoP) of a classical polarization state is thus extended to vector beams and OAM modes. Experimental results validate the theoretical physical interpretation, where we used a q-plate to map any state in the polarization PS onto the HOPS, and a linear polarizer to finally project onto the OAMPS. Three input states to such q-plate-polarizer system are considered: totally unpolarized, partially polarized, and fully polarized light. For that purpose, we design a new polarization state generator, based on two geometric phase gratings and a randomly polarized laser, which generates partially polarized light in an efficient and controlled way. We believe that the extension of the DoP concept to vector and OAM beams introduces a degree of freedom to describe spatially polarization and phase variant light beams.

show abstract

Section: Methodsmentioning

confidence: 99%

Extending the degree of polarization concept to higher-order and orbital angular momentum Poincaré spheres

Marco

Sánchez-López

Hernández-García

et al. 2022

J. Opt.

View full text Add to dashboard Cite

show abstract

“…The light source is a cw randomly polarized He-Ne laser of 5 mW and wavelength 543 nm (Melles-Griot 05-LGR-193). These are He-Ne lasers with internal mirrors attached to the tube, which operate at two orthogonally linearly polarized modes where the orientation of the linear state rapidly changes in time on a nanosecond scale, thus resulting in a light source with random polarization [14].…”

Section: Geometric Phase Grating Polarization State Generatormentioning

confidence: 99%

Polarization state generator for the generation of complex light with controllable degree of polarization

Moreno,

Marco,

Sanchez-Lopez

et al. 2023

Complex Light and Optical Forces XVII

View full text Add to dashboard Cite

Performance of internal-mirror frequency-stabilized He-Ne lasers emitting green, yellow or orange light

Rowley

Gill

1990

Appl. Phys. B

View full text Add to dashboard Cite

Polarization properties and frequency stabilization of an internal mirror He-Ne laser emitting at 543.5 nm wavelength

Cited by 19 publications

References 17 publications

Extending the degree of polarization concept to higher-order and orbital angular momentum Poincaré spheres

Extending the degree of polarization concept to higher-order and orbital angular momentum Poincaré spheres

Polarization state generator for the generation of complex light with controllable degree of polarization

Performance of internal-mirror frequency-stabilized He-Ne lasers emitting green, yellow or orange light

Contact Info

Product

Resources

About