Steering beam propagation in optical lattice by spatial phase modulation

Wang, Hongcheng; Xiaolan, Peng

doi:10.1364/josab.29.000429

Cited by 8 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, microwave field which connects the lower level metastable states of four level system can switch off the probe beam propagation inside the medium. This investigation can be applicable for all optical switching and logic gates [32,37].…”

Section: Spatial Optical Switchtingmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement of image resolution beyond the diffraction limit by double dark resonances

Verma

Dey

2014

Phys. Rev. A

View full text Add to dashboard Cite

We show how quantum coherence effects can be used to improve the resolution and the contrast of diffraction-limited images imprinted onto a probe field. The narrow and sharp spectral features generated by double-dark resonances (DDR) are exploited to control absorption, dispersion and diffraction properties of the medium. The spatial modulated control field can produce inhomogeneous susceptibility of the medium that encodes the spatial feature of the control image to probe field in the presence of DDR. The transmission of cloned image can be enhanced by use of incoherent pump field. We find that the feature size of cloned image is four times smaller than the initial characteristic size of the control image even though the control image is completely distorted after propagation through 3 cm long Rb vapour cell. We further discuss how spatial optical switching is possible by using of induced transparency and absorption of the medium.

show abstract

Section: Spatial Optical Switchtingmentioning

confidence: 99%

“…Later, we also use induced absorption and transparency mechanism to demonstrate the spatial switching (off or on) of probe beam. The spatial optical beam switching based on spatial phase modulation has been discussed recently in optical lattice [32].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of image resolution beyond the diffraction limit by double dark resonances

Verma

Dey

2014

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…[1,2] Due to their intriguing physical properties and their potential applications, lots of theoretical and experimental efforts have been made to investigate the propagation dynamics and optical steering of various kinds of spatial solitons. [3] The introduction of optical lattices into a nonlinear medium significantly promotes the research on soliton phenomena in optics [4,5] and other physics fields. [6] Among all kinds of optical lattices, Bessel lattices have received special attention because such lattices have unique radial profiles which obey the patterns of Bessel function and they can suppress optical diffraction for the lattice-inducing field.…”

Section: Introductionmentioning

confidence: 99%

Fundamental and dressed annular solitons in saturable nonlinearity with parity–time symmetric Bessel potential

Wang¹,

Wei²,

Huang³

et al. 2018

Chinese Phys. B

View full text Add to dashboard Cite

We theoretically study the existence and stability of optical solitons in saturable nonlinearity with a two-dimensional parity-time (PT) symmetric Bessel potential. Besides the fundamental solitons, a novel type of dressed soliton, whose intensity looks like a ring dressed on an intensity hump, are presented. It is found that both the fundamental solitons and dressed solitons can exist when the propagation constant is beyond a certain critical value. The propagation stability is investigated with a linear stability analysis corroborated by a beam propagation method. All the fundamental solitons are stable, while dressed solitons are unstable for low values of saturable parameter. As the value of saturable parameter increases, the dressed solitons tend to be stable at high powers.

show abstract

“…Distortion and absorption holds the fundamental limitation for the creation, detection, or propagation of small images. This limitation affects the applications such as efficient transfer and conversion of small images [41][42][43][44], steering [45][46][47] or optical manipulation of light beams [48].…”

Section: Introductionmentioning

confidence: 99%

Steering, splitting, and cloning of an optical beam in a coherently driven Raman gain system

Verma

Dey

2015

Phys. Rev. A

View full text Add to dashboard Cite

We propose an all-optical anti-waveguide mechanism for steering, splitting, and cloning of an optical beam beyond the diffraction-limit. We use a spatially inhomogeneous pump beam to create an anti-waveguide structure in a Doppler broadened N -type four-level Raman gain medium for a co-propagating weak probe beam. We show that a transverse modulated index of refraction and gain due to the spatially dependent pump beam hold the keys to steering, splitting and cloning of an optical beam. We have also shown that an additional control field permits the propagation of an optical beam through an otherwise gain medium without diffraction and instability. We further discuss how finesse of the cloned images can be increased by changing the detuning of the control field.

show abstract

Steering beam propagation in optical lattice by spatial phase modulation

Cited by 8 publications

References 21 publications

Enhancement of image resolution beyond the diffraction limit by double dark resonances

Enhancement of image resolution beyond the diffraction limit by double dark resonances

Fundamental and dressed annular solitons in saturable nonlinearity with parity–time symmetric Bessel potential

Steering, splitting, and cloning of an optical beam in a coherently driven Raman gain system

Contact Info

Product

Resources

About