Generation of Bessel light beams under the conditions of internal conical refraction

Казак, Н. С.; Хило, Н. А.; Рыжевич, А. А.

doi:10.1070/qe1999v029n11abeh001627

Cited by 36 publications

(26 citation statements)

References 3 publications

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“…The major advantage of self-healing beams is that they can be used through turbulent media [152] and that they are ideal candidates for particle manipulation at different planes [156,157] and in microscopy [158]. The CR phenomenon has been also reported as an efficient tool to generate Bessel beams [62,159,160]. The relation of CR with Bessel beams suggests that even if the input Gaussian beam is partially blocked, the CR beam may only be slightly affected.…”

Section: Introductionmentioning

confidence: 98%

Conical refraction: fundamentals and applications

Turpin

Loiko

Kalkandjiev

et al. 2016

Laser & Photonics Reviews

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A mis padres, hermanos, sobrinos y a Raquel AcknowledgmentsTot té un principi i un final i aquest serà el punt final a una etapa de la meva vida la qual estic segur que d'aquí uns anys, quan miri enrere, veuré que ha estat probablement la que ha tingut una major rellevància tant a nivell personal com científic. Quan vaig acabar la carrera no tenia gaire clar quin camí seguir però vaig tenir la sort de parlar amb qui ha estat el meu director de tesi, el Jordi, qui em va guiar i va posar tota la seva confiança en mi des del primer moment. Em va oferir un tema original i es va aventurar a dirigir una tesi amb una forta vessant experimental, tot un atreviment venint d'un teòric! Quan vaig començar el Màster, si m'haguessin dit on he arribat 5 anys després mai m'ho hauria cregut i, Jordi, tu tens gran part de culpa de tot això. Moltes gràcies per haver confiat en mi des del primer dia, per haver-te mostrat sempre tan orgullós de tot el que he fet, per haver estat sempre disponible i per ajudar-me i animar-me quan he passat moments durs durant aquest anys. M'has ensenyat a ser un bon científic, a moure'm dins aquest món, a creure em mi i a ser una millor persona. Mai t'estaré prou agraït per tot això i per haver sigut tan proper amb els teus cotilleos, converses de futbol, política, noies, etc. dinant al bar. Has estat com un pare per a mi (bueno, un germà gran, que tampoc ets tan vell per a ser Mompare :P). Si el Jordi ha estat el meu pare en la ciència, el Yury ha estat el meu gurú científic. Mai he trobat una persona tan pacient, que sàpiga tant de qualsevol tema i amb tanta dedicació com tu. M'has ensenyat a ser riguròs, a tenir un mètode, la importància de estar al dia de tot el que es fa en el cap d'estudi, a programar, i un llarg etcètera. En resum, m'has ajudat a donar-me forma a mi mateix com a científic i a tenir perseverança en el que faig. Tot això sense oblidar que per a mi ets un gran amic! Seguidament, també he donar les gràcies al Todor, una de les persones més enèrgiques que conec i amb més passió per la ciència. Tu vas iniciar tot el tema de la refracció cònica al nostre grup i has demostrat que ets realment qui més coneix de cristalls i del fenomen en si. Si no hagués estat per tu, no podríem haver començat res d'això i no podríem haver explotat el fenomen ni una quarta part del que hem fet. Ets un exemple per tenir sempre un somriure a la cara i per aquesta iii iv força que et fa tirar endavant tots els teus projectes. També vull donar les gràcies a altres companys del Grup d'Òptica, començant per la Verònica, que va passar de ser una "professora de la carrera" a ser el meu ideal de constància i l'esforç. Ets un exemple professional a més a més d'una persona molt més propera i alegra del que pot semblar a primera vista. A Ramón también le tengo que agradecer su ayuda y su disponibilidad a lo largo de estos años, su paciencia cuando ha tenido que soportar mis imitaciones y su alegría y naturalidad en todo momento. Amb el Francesc també he compartit molts bons moments, sobretot a les diverses activit...

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Section: Introductionmentioning

confidence: 98%

Conical refraction: fundamentals and applications

Turpin

Loiko

Kalkandjiev

et al. 2016

Laser & Photonics Reviews

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“…It is natural that nowadays, investigations of conical refraction are extended. Thus, the intensity distributions over the light beam cross sections were examined in [19,[24][25][26][27][28]32], and conical refraction on optically active crystals was studied in [21,33]. Because conical refraction in crystal optics is described by the unified theory of oscillations, concepts of conical refraction are used in other fields of physics, including magnetic hydrodynamics [34,35], investigations of quasi-optical electromagnetic beams [36,37], and acoustic crystallography [38].…”

Section: Discussionmentioning

confidence: 99%

Conical refraction: Experiments and large-scale demonstrations

Mikhailichenko

2007

Russ Phys J

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535.53.05Results of experiments on internal and external conical refraction on a rhombic sulfur single crystal are presented. A high-transmission optical scheme is suggested with light focusing on the crystal surface which allows two fringes of internal conical refraction ∼1 m in diameter to be observed in laser radiation. Two fringes of external conical refraction with unique polarization state are first observed, and conditions of light energy concentration along the biradial are discussed. The focusing power of a plane-parallel biaxial crystal plate is measured.

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Section: Introductionmentioning

confidence: 99%

“…This is because crystals in this class, having high photosensitivity and a rapid photorefractive response, are considered as quite promising media in holography, interferometry, and optical data processing devices. Along with traditional light beams (with a monotonic intensity distribution), recently interaction processes of Bessel light beams have been intensively studied [3] in cubic gyrotropic crystals [4].For Bessel light beams, a regularly nonmonotonic radial intensity distribution is characteristic, which leads to the appearance of certain features in conversion and interaction of such beams in photorefractive crystals. The Fourier spectrum of a Bessel light beam is a ring-shaped field, while the spatial spectrum is a cone of wave vectors.…”

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confidence: 99%

Self-action of Bessel light beams in cubic gyrotropic photorefractive crystals

Ропот

Vasil’ev

2006

J Appl Spectrosc

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We have studied conversion and interaction of a Bessel laser beam of zero order in photorefractive crystals. We have established that in a cubic gyrotropic crystal, two Bessel light beams propagate with different wave vectors and cone angles, but with identical conicity parameters. As the power in the Bessel light beam increases, we have experimentally observed a new optical effect: self-action of a Bessel light beam. We have studied the effect of external influences and the parameters of the beam itself on the process of self-refraction in photorefractive crystals. Introduction.In crystal optics, a considerable amount of attention has been focused on study of the processes of interaction and conversion of light beams in photorefractive crystals [1,2]. This is because crystals in this class, having high photosensitivity and a rapid photorefractive response, are considered as quite promising media in holography, interferometry, and optical data processing devices. Along with traditional light beams (with a monotonic intensity distribution), recently interaction processes of Bessel light beams have been intensively studied [3] in cubic gyrotropic crystals [4].For Bessel light beams, a regularly nonmonotonic radial intensity distribution is characteristic, which leads to the appearance of certain features in conversion and interaction of such beams in photorefractive crystals. The Fourier spectrum of a Bessel light beam is a ring-shaped field, while the spatial spectrum is a cone of wave vectors. Consequently, in order to obtain a Bessel light beam, suitable optical systems are those making it possible to form both a ring-shaped field (an annular aperture, an optical fiber) and a set of plane waves characterized by a cone of wave vectors (hologram, axicon, lens with spherical aberration). The most widely used elements for obtaining a zero-th order Bessel light beam are conical lenses or "axicons" [5]. The angle of refraction in these devices is a constant quantity, which ensures constancy of the convergence angle of the wave vectors of the light beam beyond the axicon. Moreover, for many technical applications, the need arises to change the cone angle of the Bessel light beam during operation.Propagation of a Bessel light beam in an isotropic medium and in a photorefractive crystal. For an isotropic medium in a cylindrical coordinate system, the wave equation for the electric field vector E can be represented as a system of three scalar equations for the components E z , E ρ , E ϕ . In this case, for the component E z the equation

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Generation of Bessel light beams under the conditions of internal conical refraction

Cited by 36 publications

References 3 publications

Conical refraction: fundamentals and applications

Conical refraction: fundamentals and applications

Conical refraction: Experiments and large-scale demonstrations

Self-action of Bessel light beams in cubic gyrotropic photorefractive crystals

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