Mid-IR laser system for advanced neurosurgery

M. Klosner; C. Wu; D. F. Heller

doi:10.1117/12.2037094

5 March 2014 Mid-IR laser system for advanced neurosurgery

M. Klosner, C. Wu, D. F. Heller

Proceedings Volume 8928, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics; 89280D (2014) https://doi.org/10.1117/12.2037094
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

We present work on a laser system operating in the near- and mid-IR spectral regions, having output characteristics designed to be optimal for cutting various tissue types. We provide a brief overview of laser-tissue interactions and the importance of controlling certain properties of the light beam. We describe the principle of operation of the laser system, which is generally based on a wavelength-tunable alexandrite laser oscillator/amplifier, and multiple Raman conversion stages. This configuration provides robust access to the mid-IR spectral region at wavelengths, pulse energies, pulse durations, and repetition rates that are attractive for neurosurgical applications. We summarize results for ultra-precise selective cutting of nerve sheaths and retinas with little collateral damage; this has applications in procedures such as optic-nerve-sheath fenestration and possible spinal repair. We also report results for cutting cornea, and dermal tissues.

Citation Download Citation

M. Klosner, C. Wu, and D. F. Heller "Mid-IR laser system for advanced neurosurgery", Proc. SPIE 8928, Optical Techniques in Neurosurgery, Neurophotonics, and Optogenetics, 89280D (5 March 2014); https://doi.org/10.1117/12.2037094

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KEYWORDS

Mid-IR

Laser tissue interaction

Tissues

Raman spectroscopy

Free electron lasers

Laser systems engineering

Alexandrite lasers

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