Laser-Neuron Interaction with Femtosecond Beat-Modulated 800-1200 nm Photon Beams, as the Treatment of Brain Cancer Tissue. Laser Neurophysics*

I propose a novel mechanism for the brain cancer tissue treatment: nonlinear interaction of ultrashort pulses of beat-photon, ($\omega _{1}$-- $\omega _{2})$, or double-photon, ($\omega _{1}+\omega _{2})$, \footnote{ Maria Goeppert-Mayer, \textbf{\"{U}ber Elementarakte mit zwei Quantenspr\"{u}ngen}\underline {,} \textit{Ann Phys} \textbf{9}, 273, 95. (1931). } beams with the cancer tissue. The multiphoton scattering is described via photon diffusion equation. The open-scull cerebral tissue can be irradiated with the beat-modulated photon pulses with the laser irradiances in the range of a few mW/cm$^{2}$, and repetition rate of a few 100s Hz generated in the beat-wave driven free electron laser.\footnote{V. Alexander Stefan, \textbf{Laser Neurophysics.} 2010 \textbf{APS March Meeting}, V. Alexander Stefan, 2009 \textbf{APS March Meeting}; V. Stefan, B. I. Cohen, and C. Joshi, \textbf{Nonlinear Mixing of Electromagnetic Waves in Plasmas}\textit{Science} 27 January 1989: V. Alexander Stefan, \textbf{Genomic Medical Physics: A New Physics in the Making}, (S-U-Press, 2008).} This highly accurate cancer tissue ablation removal may prove to be an efficient method for the treatment of brain cancer.