Holographic grating formation in a colloidal suspension of silver nanoparticles.
نویسندگان
چکیده
Holographic gratings are recorded in colloidal suspensions of silver nanoparticles by utilizing interfering nanosecond pulses. The diffraction efficiency is measured with continuous-wave light. An instantaneous response together with a transient grating are observed: the nanoparticles absorb the pump light and heat up. Heat is transferred to the solvent, and a delayed thermal grating appears. The final decay time constant of this grating depends quadratically on the period length and has a typical value of 1 micros for grating spacings of several micrometers.
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ورودعنوان ژورنال:
- Optics letters
دوره 31 4 شماره
صفحات -
تاریخ انتشار 2006