Apodizing diaphragm based on the Faraday effect

Mironov, É. A.; Voitovich, A. V.; Palashov, O.

doi:10.1016/j.optcom.2012.12.095

Cited by 9 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Still nowadays the supergaussian seems to be, especially among experimentalists, the most known and used model for dealing with flat-top beams [17][18][19][20][21], although it is well known that their propagation features are untractable in analytical terms. On the other hand, the "exact" models introduced by Gori and later by Li suffered by a (only apparent) formal complication of the propagated field expression which led several authors to still prefer the older and obsolete models.…”

Section: Discussionmentioning

confidence: 99%

Uniform approximation of paraxial flat-topped beams

Borghi

2013

J. Opt. Soc. Am. A

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Uniform approximation of paraxial flat-topped beams

Borghi

2013

J. Opt. Soc. Am. A

View full text Add to dashboard Cite

show abstract

“…With high accuracy it can be assumed that the field at each of the magnetic mirrors is mainly produced only by appropriate / proximal half of the magnetic system that allows to simplify the design task. Similar problems have been solved earlier by the authors in the same geometry with the development of laser devices (apodising screens [11], Faraday isolators [12,13]), so the design of each of the halves of the magnetic system is similar to the previously proposed scheme. However, a significant complication appeared to provide the necessary magnitude of the field at the minimum (trap center) for the given ratio of the magnetic system inner diameter and the distance between the magnetic mirrors again due to the change of the sign of the field, which must be for each of the system halves.…”

Section: Permanent Magnet Trap For Ecr Plasma Heatingmentioning

confidence: 66%

“…The system bulk is made of cheaper magnets located on the periphery, which do not have high requirements. Also soft magnetic materials [11][12][13] were used in the design of the magnetic system, able to ensure the optimal distribution of magnetic field flux and additionally reduce the system weight.…”

Section: Permanent Magnet Trap For Ecr Plasma Heatingmentioning

confidence: 99%

Design of permanent magnet trap for high current gasdynamic ECR ion sources with plasma heating by gyrotron radiation with frequency up to 45 GHz

Skalyga¹,

Izotov²,

Mironov³

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

“…Controlling magnetic field inhomogeneity is of principal importance in the development of large-aperture Faraday isolators demanded for lasers with a high average power [4,5]. High field inhomogeneity can also be used, for example, for laser beam apodization [6].…”

Section: Introductionmentioning

confidence: 99%

Permanent-magnet Faraday isolator with the field intensity of more than 3 tesla

2019

View full text Add to dashboard Cite

A permanent-magnet system with a maximum magnetic field exceeding 3 T, which is a record value for Faraday isolators, has been created. The magnitude of the field in the system is close to the theoretical limit that can be achieved at an optimal magnetization distribution. This is possible thanks to the use in the central area of the system of magnetic conductors that possess a saturation induction higher than the residual induction of the strongest magnets and provide more optimal magnetization distribution than magnets. But the main feature of the system is control of demagnetizing fields in the center of the system by optimizing the position and shape of magnetic conductors, thus retaining the maximum volume of the magnets in the core of the system without the risk of their magnetization reversal. The technology of controlling demagnetizing fields by means of magnetic conductors is proven for the first time. The created system is promising for the development of Faraday isolators for high-power lasers as it allows decreasing the length of the magneto-optical element and reducing parasitic heat generation. Record results on the maximum permissible operating power of Faraday isolators based on CeF 3 and TSAG crystals were obtained with the use of this system. It is also promising for the development of Faraday isolators for 'eye-safe' and mid-infrared radiation since the Verdet constant of magneto-active crystals in these wavelength ranges reduces substantially compared to the near-infrared. The creation of strong magnetic field becomes of principal importance for providing a needed angle of Faraday rotation.

show abstract

Apodizing diaphragm based on the Faraday effect

Cited by 9 publications

References 12 publications

Uniform approximation of paraxial flat-topped beams

Uniform approximation of paraxial flat-topped beams

Design of permanent magnet trap for high current gasdynamic ECR ion sources with plasma heating by gyrotron radiation with frequency up to 45 GHz

Permanent-magnet Faraday isolator with the field intensity of more than 3 tesla

Contact Info

Product

Resources

About