Spectral shifts and spectral switches of a pulsed Bessel–Gauss beam from a circular aperture in the far field

Yang, Yuanjie; Li, Yude

doi:10.1016/j.optlastec.2007.02.002

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…It is well known that Bessel beams are solutions of the Helmholtz equation, and have attracted a lot of attention [1][2][3][4][5][6][7][8] for their nondiffracting property. Bessel beams represent a class of so-called diffraction free solutions to the Helmholtz equation, and have been studied extensively since 1980s [1], and these beams are easily generated external to the laser cavity by illuminating an axicon with a Gaussian beam [8].…”

Section: Introductionmentioning

confidence: 99%

Focusing of concentric piecewise vector Bessel–Gaussian beam

Fang

Zhou

et al. 2010

Optics and Lasers in Engineering

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Section: Introductionmentioning

confidence: 99%

Focusing of concentric piecewise vector Bessel–Gaussian beam

Fang

Zhou

et al. 2010

Optics and Lasers in Engineering

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“…It is well known that Bessel beams provide valid solutions to Helmholtz equation, and have attracted a lot of attention [9,10,11] for their non-diffracting property. And these beams are easily generated external to the laser cavity by illuminating an axicon with a Gaussian beam [12].…”

Section: Introductionmentioning

confidence: 99%

Tunable optical gradient trap by radial varying polarization Bessel-Gauss beam

Gao¹,

Hu²,

Li³

et al. 2010

JBiSE

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Optical tweezers play an important role in many domains, especially in life science. And optical gradient force is necessary for constructing optical tweezers. In this paper, the optical gradient force in the focal region of radial varying polarization Bessel- Gauss beam is investigated numerically by means of vector diffraction theory. Results show that the beam parameter and vary rate parameter that indicates the change speed of polarization rotation angle affect the optical gradient force pattern very considerably, and some novel force distributions may come into being, such as multiple force minimums, force ring, and force crust. Therefore, the focusing of radial varying polarization Bessel-Gauss beam can be used to construct optical traps

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“…Many different kinds of behavior can exist around singular points, e.g., wave front dislocations, optical vortices, 3) spectral switches, and spectra distortions. [4][5][6][7][8][9][10][11][12] Most earlier publications used monochromatic waves as light sources [1][2][3] to discuss this singular behavior. In more recent studies, it has been found that, for polychromatic light 4,8) or broad-band short pulse wave fields 5,6) drastic spectral changes can also be exhibited.…”

Section: Introductionmentioning

confidence: 99%

“…The latter is also referred to as ''aperture dispersion''. 5,6,13,14) Since then, Many studies have used different kinds of light sources (e.g., Bessel-Gauss beam, 11) Gaussian-Schell model, 9) Gaussian pulse 5,6) ) or various optical elements (e.g., single slit, 10) double slit, 8) circular aperture, 13) gratings 14) ) to study these spectral anomalies in the near field or far field; some of these studies have been experimentally verified. [15][16][17] In this article, an adjustable tilted mirror is used to cause the far field spectral changes for a Gaussian short pulse.…”

Section: Introductionmentioning

confidence: 99%

Spectral Switches of Gaussian Pulse from Adjustable Tilted Mirror in Far Field

Han¹

2009

jjap

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The far-field spectral anomalies of a short Gaussian pulse incident on an adjustable tilted mirror are studied theoretically and some numerical examples are given to illustrate this effect. Some anomalous behavior (such as a red or blue shift of the peak) of the diffracted pulse can be observed under some conditions. Also an important phenomenon called a "spectral switch" is presented, which can be controlled by adjusting the tilt angle of the mirror and which has potential applications in information encoding and transmission for free space communications. Our method has benefits of easier implementation than other method which modulate some properties of the light source, and of allowing selection of the direction of the transmission as needed. (C) 2009 The Japan Society of Applied Physic

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Spectral shifts and spectral switches of a pulsed Bessel–Gauss beam from a circular aperture in the far field

Cited by 15 publications

References 26 publications

Focusing of concentric piecewise vector Bessel–Gaussian beam

Focusing of concentric piecewise vector Bessel–Gaussian beam

Tunable optical gradient trap by radial varying polarization Bessel-Gauss beam

Spectral Switches of Gaussian Pulse from Adjustable Tilted Mirror in Far Field

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