2020
DOI: 10.1103/physrevresearch.2.043378
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Generalized description of the nonlinear optical force in laser trapping of dielectric nanoparticles

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Cited by 14 publications
(11 citation statements)
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“…In contrast, high RI (both linear and nonlinear) particles cannot be trapped under pulsed excitation at high average power because scattering force dominant over the gradient force. However, under CW excitation, a few high RI particles can be trapped with better trapping efficiencies under similar conditions [9].…”
Section: Resultsmentioning
confidence: 99%
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“…In contrast, high RI (both linear and nonlinear) particles cannot be trapped under pulsed excitation at high average power because scattering force dominant over the gradient force. However, under CW excitation, a few high RI particles can be trapped with better trapping efficiencies under similar conditions [9].…”
Section: Resultsmentioning
confidence: 99%
“…Here, 𝑛 𝑝 is the RI of the particle and 𝑉 is 4𝜋𝑛 𝑤 2 𝜖 0 𝑎 3 . For the core-shell type nanoparticles, 𝛼 can be calculated as [9,19]:…”
Section: Mathematical Formulationmentioning
confidence: 99%
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“…For understanding the contribution of nonlinearity in polarizability, the polarizability can be rewritten in the form of linear and nonlinear terms. Eqn (4a) can be written as including the optical nonlinearity: 9 neglecting higher order terms ( n p 2 I ) 2 , and define …”
Section: Resultsmentioning
confidence: 99%
“…Here, n p is the RI of the particle and V is 4π n w 2 ε 0 a 3 . For the core–shell type nanoparticles, α can be calculated as: 9,20 where, n c , and n s are the RI of core, and shell, respectively. is the ratio of core radius ( a c ) to that of shell ( a s ), and V is 4π n w 2 ε 0 a 3 s .…”
Section: Mathematical Formulationmentioning
confidence: 99%