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Design of an optical trap for storing femtosecond laser pulses
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 42018 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 57, no 5, p. 1212-1217Article in journal (Refereed) Published
Abstract [en]

An optical trap for storing femtosecond laser pulses to enhance the interaction effectiveness with optically thin targets is being proposed and investigated. Presently, we studied the trapping of 10-200 fs laser pulses of wavelength 800 nm, 1 mu J energy per pulse, and 10 Hz repetition rate. To compensate the optical losses in the trap, a Ti: Sapphire crystal as an amplifying medium is being considered, which should be synchronously pumped by the second harmonic of the Nd: YAG laser. Due to the propagation of the short pulses through optical trap components, group velocity dispersion introduces a significant broadening in pulse duration. To compensate for this broadening, a chirped mirror with suitable parameters is being proposed. An increase of the average power of the laser pulse in the optical trap that includes an amplifying medium (Ti: Sapphire crystal) by a factor of 805 compared to a single passage of the laser pulse was derived. It should be possible to store the laser pulse in the optical trap for >4 mu s with constant power and with a repetition rate of up to 250 MHz.

Place, publisher, year, edition, pages
2018. Vol. 57, no 5, p. 1212-1217
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-153756DOI: 10.1364/AO.57.001212ISI: 000424680800031PubMedID: 29469866OAI: oai:DiVA.org:su-153756DiVA, id: diva2:1193492
Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2018-03-27Bibliographically approved

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