&lt;title&gt;Experimental investigation into interaction of femtosecond laser pulses with aerosol&lt;/title&gt;

Bochkarev, N. N.; Zemlyanov, A. A.; Kabanov, A. M.; Kartashov, Daniil; Kirsanov, A. V.; Matvienko, Gennadii G.; Степанов, А. Н.

doi:10.1117/12.606274

Cited by 7 publications

(7 citation statements)

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“…Therefore a penetration depth of short pulse radiation is the same as for longer one. This result is well conformed with obtained by us earlier the data of comparison of propagation of femto-and nanosecond pulses in gas and aerosol medium [5] that is a model of biological tissue. In that time, measured energy thresholds of optical breakdown and plasma centers formation for short pulses are significantly lower than for longer ones.…”

Section: Resultssupporting

confidence: 94%

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Optical acoustic experimental investigation of propagation femtosecond laser radiation in air and biological tissues

et al. 2007

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Using two optical acoustic approaches we experimentally investigated spatial location of filament zone of propagation channel of focused laser radiation. For femtosecond pulses passing in air it was shown that nonlinear focus length had spatial scale of 1/P at initial power P moderate for self-focusing and at optical system focus distance significantly lower than Rayleigh beam length. The results of experimental optical acoustic investigation of femto-and nanosecond pulses attenuation by some biological tissues (muscular tissue, adipose tissue, cutaneous covering, and milk) and optical breakdown thresholds on these one are presented. It was shown that penetration depth of short laser pulse radiation into biological tissues is the same as for longer one. However, amplitude of acoustic response to a process of interaction of femtosecond laser pulse with biological tissue is larger in several times than that to interaction with nanosecond pulses of the same power and spectral distribution. The obtained threshold values can be interesting for tabulation of limit allowable levels of irradiation at work with laser radiation. Such values are unknown for femtosecond laser pulses today.

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Section: Resultssupporting

confidence: 94%

“…4 it is allowed to determine location of nonlinear focus for focused beam using following ratios: is open. For solving of given problem we used optical acoustic method of experimental investigation [5] that allowed to determine boundary of high-power femtosecond laser pulse filamentation zone n air by contact-free method with quite accuracy.…”

Section: Resultsmentioning

confidence: 99%

Optical acoustic experimental investigation of propagation femtosecond laser radiation in air and biological tissues

et al. 2007

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“…Hence, the penetration depth of short pulses is the same as of long ones. This result is in agreement with our data on a comparison of the femto-and nanosecond pulse propagation through a gas-aerosol medium [9]. At the same time, the measured power thresholds of optical breakdown and the formation of plasma centers on biotissues upon exposure to short pulses were much lower than upon exposure to long pulses.…”

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confidence: 92%

Investigation of the interaction of femtosecond laser radiation with biotissues by the optoacoustic method

et al. 2010

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Results of experimental optoacoustic investigations of femto-and nanosecond laser pulse extinction by muscular and fatty biotissues, skin, and milk and thresholds of optical breakdown of these tissues are presented. It is demonstrated that the depth of short laser pulse penetration into the biotissue is the same as of long pulses. However, the amplitude of the acoustic response to the interaction of femtosecond laser pulses with the biotissue exceeds several times the amplitude of response to the interaction with nanosecond pulses of the same energy and spectral structure.

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“…Peaks from individual spherical plasma formations are clearly recognized; moreover, the peak shapes are well described by blast N-waves with equal amplitudes of the positive and negative half-periods. Analogous time histories of the acoustic signal from laser spark were presented in [4].…”

Section: Acoustic Radiation From a Long Laser Sparkmentioning

confidence: 99%

Sound generation in the atmosphere upon exposure to high-power milli- and microsecond laser pulses

2009

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A review of works on generation of acoustic pulses in the atmosphere upon exposure to high-power laser pulses is presented in this paper. Characteristics of sound pulses in the atmosphere accompanying the propagation of high-power milli-and microsecond laser pulses, including the peak sound pressure level and the shape and spectrum of acoustic pulses, are discussed. The special features of acoustic pulses from individual liquid and solid aerosol particles and ensembles of monodisperse particles and polydisperse atmospheric aerosol are discussed. The characteristics of acoustic signals from long laser sparks and collective optical discharges are considered.

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<title>Experimental investigation into interaction of femtosecond laser pulses with aerosol</title>

Cited by 7 publications

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Optical acoustic experimental investigation of propagation femtosecond laser radiation in air and biological tissues

Optical acoustic experimental investigation of propagation femtosecond laser radiation in air and biological tissues

Investigation of the interaction of femtosecond laser radiation with biotissues by the optoacoustic method

Sound generation in the atmosphere upon exposure to high-power milli- and microsecond laser pulses

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