Time-gated imaging through scattering media using stimulated Raman amplification

Duncan, Michael; Mahon, Rita; Tankersley, L. L.; Reintjes, J.

doi:10.1364/ol.16.001868

Cited by 106 publications

(23 citation statements)

References 6 publications

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“…Since multiply scattered photons usually have longer path lengths than weakly scattered photons, they can be excluded by time gating. [1][2][3][4][5] Polarization gating can be used as an alternative method for extracting the ballistic and quasiballistic components because weakly scattered light preserves its original polarization better than multiply scattered light. [6][7][8][9][10] Polarization propagation in biological tissues is a complicated process that is fundamental to tissue optics.…”

Section: Introductionmentioning

confidence: 99%

Polarized light propagation through scattering media: time-resolved Monte Carlo simulations and experiments

Wang

Sun

et al. 2003

J. Biomed. Opt.

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Abstract.A study of polarized light transmitted through randomly scattering media of a polystyrene-microsphere solution is described. Temporal profiles of the Stokes vectors and the degree of polarization are measured experimentally and calculated theoretically based on a Monte Carlo technique. The experimental results match the theoretical results well, which demonstrates that the time-resolved Monte Carlo technique is a powerful tool that can contribute to the understanding of polarization propagation in biological tissue. Analysis based on the Stokes-Mueller formalism and the Mie theory shows that the first scattering event determines the major spatial patterns of the transmitted Stokes vectors. When an area detected at the output surface of a turbid medium is circularly symmetrical about the incident beam, the temporal profile of the transmitted light is independent of the incident polarization state. A linear relationship between the average order of the scatters and the light propagation time can be used to explain the exponential decay of the degree of polarization of transmitted light.

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Section: Introductionmentioning

confidence: 99%

Polarized light propagation through scattering media: time-resolved Monte Carlo simulations and experiments

Wang

Sun

et al. 2003

J. Biomed. Opt.

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“…The current research topics in this area include time-domain short-pulse laser imaging, [3][4][5] frequency-domain imaging, [6][7][8][9][10] and other ballistic or quasi-ballistic imaging. [11][12][13][14] The key problem with these techniques is the trade-off between imaging resolution and signal. [15][16][17] Marks et al have investigated tissue imaging by using the combination of pulsed ultrasound and laser light and have detected the signal of a homogeneous turbid medium without buried objects.…”

mentioning

confidence: 99%

Continuous-wave ultrasonic modulation of scattered laser light to image objects in turbid media

1995

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“…Over the past two decades, a number of nonlinear optical processes have been exploited to form sub-picosecond gating mechanisms, including stimulated Raman [8], second harmonic generation (SHG) [9,10], and the optical Kerr effect (OKE) [11]. In terms of imaging applications, the latter approach remains the most popular in the literature and has generated renewed interest for imaging high-speed transient phenomena in scattering environments [3].…”

Section: Picosecond Time-gated Imagingmentioning

confidence: 99%

Collinear, two-color optical Kerr effect shutter for ultrafast time-resolved imaging

Purwar¹,

Idlahcen²,

Rozé³

et al. 2014

Opt. Express

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Imaging with ultrashort exposure times is generally achieved with a crossed-beam geometry. In the usual arrangement, an off-axis gating pulse induces birefringence in a medium exhibiting a strong Kerr response (commonly carbon disulfide) which is followed by a polarizer aligned to fully attenuate the on-axis imaging beam. By properly timing the gate pulse, imaging light experiences a polarization change allowing time-dependent transmission through the polarizer to form an ultrashort image. The crossed-beam system is effective in generating short gate times, however, signal transmission through the system is complicated by the crossing angle of the gate and imaging beams. This work presents a robust ultrafast time-gated imaging scheme based on a combination of type-I frequency doubling and a collinear optical arrangement in carbon disulfide. We discuss spatial effects arising from crossed-beam Kerr gating, and examine the imaging spatial resolution and transmission timing affected by collinear activation of the Kerr medium, which eliminates crossing angle spatial effects and produces gate times on the order of 1 ps. In addition, the collinear, two-color system is applied to image structure in an optical fiber and a gasoline fuel spray, in order to demonstrate image formation utilizing ballistic or refracted light, selected on the basis of its transmission time. 16, 1868-1870 (1991). 9. K. M. Yoo, Q. Xing, and R. R. Alfano, "Imaging objects hidden in highly scattering media using femtosecond second-harmonic-generation cross-correlation time gating," Opt. Lett. 16, 1019Lett. 16, -1021Lett. 16, (1991. 10. S. Idlahcen, C. Rozé, L. Méès, T. Girasole, and J.-B. Blaisot, "Sub-picosecond ballistic imaging of a liquid jet,"Exp. Fluids 52, 289-298 (2011). 11. L. Wang, P. Ho, C. Liu, G. Zhang, and R. Alfano, "Ballistic 2-d imaging through scattering walls using an ultrafast optical Kerr gate," Science 253, 769-771 (1991). 12. R. Alfano, ed., Semiconductors probed by ultrafast laser spectroscopy (Academic, 1984, vol. II

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Time-gated imaging through scattering media using stimulated Raman amplification

Cited by 106 publications

References 6 publications

Polarized light propagation through scattering media: time-resolved Monte Carlo simulations and experiments

Polarized light propagation through scattering media: time-resolved Monte Carlo simulations and experiments

Continuous-wave ultrasonic modulation of scattered laser light to image objects in turbid media

Collinear, two-color optical Kerr effect shutter for ultrafast time-resolved imaging

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