| Autor: |
Fedotov SS, Okhrimchuk AG, Lipatiev AS, Stepko AA, Piyanzina KI, Shakhgildyan GY, Presniakov MY, Glebov IS, Lotarev SV, Sigaev VN |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2018 Feb 15; Vol. 43 (4), pp. 851-854. |
| DOI: |
10.1364/OL.43.000851 |
| Abstrakt: |
We have found that a single sub-microsecond burst of femtosecond laser pulses produces a sub-micrometer cavity possessing the homogeneous birefringence with slow-axis orientation perpendicular to polarization of the laser beam in high-silicate nanoporous glass. Retardance and the root mean square of slow-axis orientation are investigated in dependence on the energy and the number of pulses in the burst. A burst of just three pulses with 98 ns inter-pulse intervals has been shown to induce homogeneous birefringence, and a burst of four pulses has provided birefringence with retardance of 35 nm, which is sufficient for reliable readout of the information recorded with multilevel encoding in slow-axis orientation. A text file has been recorded and read out in an array of birefringent cavities, each carrying 3 bits of information. The sub-microsecond burst of femtosecond pulses paves the way for a multiple increase of the rate of digital information recording with multilevel encoding in glass. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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