Measurements of the scattering coefficients of intralipid solutions by a femtosecond optical Kerr gate

Tong, Junyi; Yi, Yang; Si, Jinhai; Tan, Wenjiang; Chen, Feng; Yi, Wenhui; Hou, Xun

doi:10.1117/1.3567069

Cited by 15 publications

(12 citation statements)

References 19 publications

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“…OD is defined as -ln (I/I 0 ), where I is the intensity of the light exiting the scattering medium and I 0 is the intensity of the light entering the scattering medium. The OD of the suspension in our experiments was measured using the optical Kerr gate method [18]. Speckles are clearly visible in Fig.…”

Section: Resultsmentioning

confidence: 99%

Speckle-suppressed full-field imaging through a scattering medium using a supercontinuum

Zheng¹,

Si²,

Tan³

et al. 2016

Opt. Express

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We demonstrate speckle-suppressed full-field imaging through a scattering medium using incoherent supercontinuum (SC) illumination. The patterns in images obtained using SC illumination were found to be more easily identifiable than those in images acquired using coherent direct laser illumination due to the speckle suppression. Even when the optical depth reached 12.3, the patterns remained identifiable. As one of the potential applications, we also demonstrated the imaging for a high-pressure diesel spray using SC illumination.

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Section: Resultsmentioning

confidence: 99%

Speckle-suppressed full-field imaging through a scattering medium using a supercontinuum

Zheng¹,

Si²,

Tan³

et al. 2016

Opt. Express

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“…Ultrafast optical Kerr gate (OKG) is the most popular time gate, which has a time window on the order of hundreds of femtoseconds to several picoseconds depending on the pump pulse duration and the relaxation time of the optical Kerr medium. This method is more accurate [348], and capable of dealing with DDM samples with very high optical thicknesses (even several hundred) [349]. It also lays the foundation of the well-known time-gated ballistic imaging technique in turbid media [350,351].…”

Section: Measurement Of Coherent Transmittancementioning

confidence: 99%

The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media

Wang,

Zhao

2020

Preprint

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The dependent scattering effect (DSE), which arises from the wave nature of electromagnetic radiation, is a critical mechanism affecting the radiative properties of micro/nanoscale discrete disordered media (DDM). In the last a few decades, the approximate nature of radiative transfer equation (RTE) leads to a plethora of investigations of the DSE in various DDM, ranging from fluidized beds, photonic glass, colloidal suspensions and snow packs, etc. In this article, we give a general overview on the theoretical, numerical and experimental methods and progresses in the study of the DSE. We first present a summary of the multiple scattering theory of electromagnetic waves, including the analytic wave theory and Foldy-Lax equations, as well as its relationship with the RTE. Then we describe in detail the physical mechanisms that are critical to DSE and relevant theoretical considerations as well as numerical modeling methods. Experimental approaches to probe the radiative properties and relevant progresses in the experimental investigations of the DSE are also discussed. In addition, we give a brief review on the studies on the DSE and other relevant interference phenomena in mesoscopic physics and atomic physics, especially the coherent backscattering cone, Anderson localization, as well as the statistics and correlations in disordered media. We expect this review can provide profound and interdisciplinary insights to the understanding and manipulation of the DSE in disordered media for thermal engineering applications.

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“…Therefore, OKG imaging employed a short time gate with which to observe the object hidden in the turbid media; these methods have been widely investigated. 17 The optical system of SF imaging was set up by replacing the Kerr medium with an aperture at the back focal plane of the L1, as shown in Fig. The ballistic, snake, and scattering photons belong to different spatial frequency components on the Fourier-transform spectrum plane of the collection lens in the imaging system.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of two ballistic imaging methods based on the femtosecond optical Kerr gate and spatial filtering

Tan

et al. 2014

Opt. Eng

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We demonstrated two ballistic imaging for an object hidden behind turbid media using the optical Kerr gate (OKG) and spatial filtering (SF), respectively. The influence of the scattering parameters of the turbid media on the image contrast was investigated. The experimental results showed that the image contrast of the SF imaging decreased significantly with increasing optical density and scattering particle size of the turbid media. Compared to the SF imaging, the OKG imaging showed a higher and more stable image contrast as scattering photons in the optical gated imaging case were more effectively eliminated. © 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)

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Measurements of the scattering coefficients of intralipid solutions by a femtosecond optical Kerr gate

Cited by 15 publications

References 19 publications

Speckle-suppressed full-field imaging through a scattering medium using a supercontinuum

Speckle-suppressed full-field imaging through a scattering medium using a supercontinuum

The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media

Comparative study of two ballistic imaging methods based on the femtosecond optical Kerr gate and spatial filtering

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