| 1. |
- Akhmediev, N.N., et al.
(författare)
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Radiationless optical solitons with oscillating tails
- 1994
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Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018. ; 110:5-6, s. 540-544
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Tidskriftsartikel (refereegranskat)abstract
- We investigate, analytically and numerically, stationary soliton-like pulse propagation in nonlinear optical fibres, taking into account the effects of fourth order dispersion. A new type of stationary stable soliton-like solution is found. A unique feature of this type of solution is their unusual asymptotic behaviour (oscillating tails). © 1994.
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| 2. |
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| 3. |
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| 4. |
- Aldén, Marcus, et al.
(författare)
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Two-photon excitation of atomic oxygen in a flame
- 1982
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Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018. ; 42:4, s. 244-246
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Tidskriftsartikel (refereegranskat)abstract
- Atomic oxygen has been detected in a lean acetylene/oxygen flame using the 2p43P2-2p33p3P two-photon transition at 226 nm and fluorescence detection at 845 nm.
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| 5. |
- Ankiewicz, A., et al.
(författare)
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Dark soliton pairs in fiber couplers
- 1994
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Ingår i: Optics Communications. - 0030-4018. ; 111:1-2, s. 116-122
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Tidskriftsartikel (refereegranskat)abstract
- We analyze the possible stationary states formed by pairs of dark solitons propagating in dual-core optical fibers, i.e. in a nonlinear coupler. These are local disturbances on a constant background. We find new dark soliton states, characterize them and show that they differ from the soliton states consisting of coupled bright solitons in several ways. © 1994.
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| 6. |
- Karlsson, Magnus, 1967
(författare)
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Optical fiber-grating compressors utilizing long fibers
- 1994
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Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018. ; 112:1-2, s. 48-54
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Tidskriftsartikel (refereegranskat)abstract
- The properties of optical fiber-grating compressors have been investigated numerically, considering fibers ten times longer than in previous studies. It is found that such long fibers yield substantially better compression than the previously investigated short ones. Also considerde are the sensitivity of pulse shape on the compression by using Gaussian-, parabolic- and sech- shaped pulses as initial conditions. © 1994.
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| 7. |
- Kohlweyer, S, et al.
(författare)
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Harmonic generation from solid-vacuum interface irradiated at high laser intensities
- 1995
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Ingår i: Optics Communications. - 0030-4018. ; 117:5-6, s. 431-438
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Tidskriftsartikel (refereegranskat)abstract
- Observations of harmonic generation from solid Al targets irradiated at intensities of 1017 W/cm2 using a tabletop Ti:sapphire terawatt laser system are reported. For irradiances with laser light at a wavelength of [lambda] = 794nm (the fundamental frequency), harmonics up to the 7th, while for irradiances with frequency doubled laser light ([lambda] = 397) nm harmonics up to the 4th of the respective incident radiation were detected.
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| 8. |
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| 9. |
- Lundberg, Hans, et al.
(författare)
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Two quantum-beat phenomena observed for magnetically tuned atomic sublevels
- 1978
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Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018. ; 27:2
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Tidskriftsartikel (refereegranskat)abstract
- Quantum-beat signals can also be observed when the length of the exciting pulse is not short compared to the Bohr precession period if spontaneous decays during the pulse are important. Experimental demonstration for Zeeman quantum beats in the 6s6p 3P1-6s21S0 ytterbium transition, as well as a simple description of the phenomenon is given. In the same way as quantum beats can be obtained for coherently excited Zeeman sublevels close to the zero-field level crossing, beats can be induced close to a high-field level crossing. We have observed such high-field quantum beats for the 7 2P state of 133Cs.
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| 10. |
- Malmqvist, Lennart, et al.
(författare)
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Trapped-particle Optical Microscopy
- 1992
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Ingår i: Optics Communications. - 0030-4018. ; 94:1-3, s. 19-24
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Tidskriftsartikel (refereegranskat)abstract
- A scanned probe optical microscope allowing nondestructive studies of a wide range of objects and surfaces is described. The microscope utilizes a noninvasive optical trap to position a microscopic probe light source in immediate proximity to the studied object. We demonstrate the method experimentally and show theoretically its potential for optical imaging with subdiffraction limited resolution of, e.g., biological objects.
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