Kai J. Drühl

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We study a generalized notion of two-mode squeezing for the Stokes and anti-Stokes fields in a model of a cavity Raman laser, which leads to a significant reduction in decoherence or quantum noise. The model comprises a loss-less cavity with classical pump, unsaturated medium and arbitrary homogeneous broadening and dispersion. Allowing for arbitrary linear(More)
We study the effects of higher order transversal modes in a model of a singlyresonant OPO, using both numerical solutions and mode expansions including up to two radial modes. The numerical and two-mode solutions predict lower threshold and higher conversion than the single-mode solution at negative dispersion. Relative power in the zero order radial mode(More)
This paper investigates the role of consciousness for the field of physics. We propose that physics needs to include a systematic account of consciousness if it aims to offer a complete account of the physical world. The discovery of quantum mechanics, and of completely unified quantum field theories such as superstring theory, has resulted in a profound(More)
We predict Stokes-beam divergence, origin, and gain for large-gain Raman amplifiers as functions of pump-beam divergence and pump power in terms of simple analytical expressions. Stokes divergence is found to peak at a pump power twice above threshold. Results are in excellent agreement with exact computer solutions and explain recent experimental(More)
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