A system using SPML laser in measuring the depth-resolved thermal change

Gokkan H., Guralp E., Tozburun S.

Optical Coherence Imaging Techniques and Imaging in Scattering Media V 2023, Munich, Germany, 25 - 29 June 2023, vol.12632 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 12632
  • Doi Number: 10.1117/12.2672215
  • City: Munich
  • Country: Germany
  • Keywords: Laser nerve stimulation, Optical Coherence Tomography, Stretched-pulse mode-locked
  • Dokuz Eylül University Affiliated: Yes

Abstract

The laser nerve stimulation technique is an emerging stimulation method that utilizes some of the advantages of laser-tissue interaction. However, a narrow temperature range (41 °C – 48 °C) for successful, reliable, and safe laser nerve stimulation remains challenging for the method. This preliminary study investigates the depth-resolved thermal measurement performance of the system, comprising >22 MHz stretched-pulse mode-locked (SPML) laser and a 1505 nm laser for laser nerve stimulation. Providing the OCT signal in M mode, the system successfully measured the change in fringe amplitude as a function of temperature increases in a phantom model.