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Journal of Luminescence

Coupled molecular excited states form unstable spatial modes in an optical λ/2-microresonator

Mathias Bernhard Steiner, Achim Hartschuh, Frank E. Schleifenbaum, Alfred Johann Meixner

Published Dec 5, 2007• 1 citation
Publisher
DOI
10.1016/j.jlumin.2007.11.054

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We propose the extension of existing molecular modulation techniques for continuous-wave optical modulation to Raman-active microresonators. Intense pump and Stokes modes inside a microresonator prepare a high coherence of the Raman transition between two ro-vibrational states. With the coherence prepared, any laser in the optical region can be coupled to the microresonator and be modulated. We perform numerical simulations which predict that these "microresonator-based molecular modulators" could have modulation efficiencies on the order of 1% at 10 THz-scale frequencies for any optical wavelength.
Control of molecular Spontaneous Emission in an optical λ/2-microresonator\n \nIn this thesis, the influence of a planar optical λ/2-microresonator on the Spontaneous Emission rate of embedded molecules and the implications on the microresonator-controlled emission is investigated by means of scanning confocal optical microscopy and spectroscopy. The experimental results obtained for molecular ensembles as well as for single molecules are compared with calculations and computer simulations based on existing theoretical models.