dorsal/arxiv
View SchemaThe Gouy phase shift in nonlinear interactions of waves
| Authors | Nico Lastzka, Roman Schnabel |
|---|---|
| Categories | |
| ArXiv ID | physics/0611257 |
| URL | https://arxiv.org/abs/physics/0611257 |
| DOI | 10.1364/OE.15.007211 |
Abstract
We theoretically analyze the influence of the Gouy phase shift on the nonlinear interaction between waves of different frequencies. We focus on $\chi^{(2)}$ interaction of optical fields, e.g. through birefringent crystals, and show that focussing, stronger than suggested by the Boyd-Kleinman factor, can further improve nonlinear processes. An increased value of 3.32 for the optimal focussing parameter for a single pass process is found. The new value builds on the compensation of the Gouy phase shift by a spatially varying, instead constant, wave vector phase mismatch. We analyze the single-ended, singly resonant standing wave nonlinear cavity and show that in this case the Gouy phase shift leads to an additional phase during backreflection. Our numerical simulations may explain ill-understood experimental observations in such devices.
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"abstract": "We theoretically analyze the influence of the Gouy phase shift on the\nnonlinear interaction between waves of different frequencies. We focus on\n$\\chi^{(2)}$ interaction of optical fields, e.g. through birefringent crystals,\nand show that focussing, stronger than suggested by the Boyd-Kleinman factor,\ncan further improve nonlinear processes. An increased value of 3.32 for the\noptimal focussing parameter for a single pass process is found. The new value\nbuilds on the compensation of the Gouy phase shift by a spatially varying,\ninstead constant, wave vector phase mismatch. We analyze the single-ended,\nsingly resonant standing wave nonlinear cavity and show that in this case the\nGouy phase shift leads to an additional phase during backreflection. Our\nnumerical simulations may explain ill-understood experimental observations in\nsuch devices.",
"arxiv_id": "physics/0611257",
"authors": [
"Nico Lastzka",
"Roman Schnabel"
],
"categories": [
"physics.optics"
],
"doi": "10.1364/OE.15.007211",
"title": "The Gouy phase shift in nonlinear interactions of waves",
"url": "https://arxiv.org/abs/physics/0611257"
},
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