dorsal/arxiv
View SchemaAsymmetric Optical Radiation Pressure Effects on Liquid Interfaces Under Intense Illumination
| Authors | Alexis Casner, Jean-Pierre Delville, Iver Brevik |
|---|---|
| Categories | |
| ArXiv ID | physics/0212019 |
| URL | https://arxiv.org/abs/physics/0212019 |
| DOI | 10.1364/JOSAB.20.002355 |
Abstract
Deformations of horizontal liquid interfaces by optical radiation pressure are generally expected to display similar behaviors whatever the direction of propagation of the exciting laser beam is. In the present experiment we find this expectation to be borne out, as long as the cw laser illumination is moderate in strength. However, as a striking contrast in the case of high field strengths, we find that either a large stable tether can be formed, or else that a break-up of the interface can occur, depending on whether the laser beam is upward or downward directed. Physically, the reason for this asymmetry can be traced to whether total reflection can occur or not. We also present two simple theoretical models, one based on geometrical optics, the other on wave optics, that are able to illustrate the essence of the effect. In the case leading to interface disruption our experimental results are compared with those obtained by Zhang and Chang for water droplets under intense laser pulses [Opt. Lett. \textbf{13}, 916 (1988)]. A key point in our experimental investigations is to work with a near-critical liquid/liquid interface. The surface tension becomes therefore significantly reduced, which thus enhances the magnitude of the stationary deformations induced.
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"abstract": "Deformations of horizontal liquid interfaces by optical radiation pressure\nare generally expected to display similar behaviors whatever the direction of\npropagation of the exciting laser beam is. In the present experiment we find\nthis expectation to be borne out, as long as the cw laser illumination is\nmoderate in strength. However, as a striking contrast in the case of high field\nstrengths, we find that either a large stable tether can be formed, or else\nthat a break-up of the interface can occur, depending on whether the laser beam\nis upward or downward directed. Physically, the reason for this asymmetry can\nbe traced to whether total reflection can occur or not. We also present two\nsimple theoretical models, one based on geometrical optics, the other on wave\noptics, that are able to illustrate the essence of the effect. In the case\nleading to interface disruption our experimental results are compared with\nthose obtained by Zhang and Chang for water droplets under intense laser pulses\n[Opt. Lett. \\textbf{13}, 916 (1988)]. A key point in our experimental\ninvestigations is to work with a near-critical liquid/liquid interface. The\nsurface tension becomes therefore significantly reduced, which thus enhances\nthe magnitude of the stationary deformations induced.",
"arxiv_id": "physics/0212019",
"authors": [
"Alexis Casner",
"Jean-Pierre Delville",
"Iver Brevik"
],
"categories": [
"physics.optics",
"physics.gen-ph"
],
"doi": "10.1364/JOSAB.20.002355",
"title": "Asymmetric Optical Radiation Pressure Effects on Liquid Interfaces Under Intense Illumination",
"url": "https://arxiv.org/abs/physics/0212019"
},
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