Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-11-23
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
11 pages, in the previous version, we failed to insert figures
Scientific paper
The effect of the light group velocity reduction in dielectric Bragg reflection waveguide structures (SiO$_2$/TiO$_2$) in the vicinity of the cutoff frequency is studied experimentally. The effect of anti-mirror reflection, specific for the Bragg reflection waveguides, is described and employed for detection of "slow light". The experiments were performed with the use of the Ti:sapphire laser pulses ~ 100 fs in length. The group index $n_g \sim$ 30 with a fractional pulse delay (normalized to the pulse width) of $\sim$ 10 is demonstrated. The problems and prospects of implementation of the slow-light devices based on the Bragg reflection waveguide structures are discussed.
Kapitonov Yu. V.
Kozlov Gleb G.
Ovsyankin V. V.
Zapasskii V. S.
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