Method and device for contactless temperature monitoring and temperature adjustment

A method for contactless temperature monitoring and adjustment, the method comprising:

• (a) directing a probing light beam onto the sample where at least two partial beams of the probing light beam pass through different long path lengths in the sample, and are reflected or backscattered from at least two different depths in the sample;
• (b) returning the reflected or backscattered partial beams into an analytical unit;
• (c) producing an interference pattern in an analytical unit by means of an interferometric device which uses one beam as the reference light beam;
• and
• (d) evaluating the interference pattern produced in an evaluating unit.

A device for contactless temperature monitoring and adjustment, the device comprising:

• (a) an analytical unit with a light source for the probing light;
• (b) a detecting device for electronically detecting the interference pattern produced by the returned partial beams of the irradiated biological tissue;
• and
• (c) an evaluating unit.

Method for determining the temperature of a sample, the method comprising:

• directing a probing light beam onto the sample, where at least two partial beams of the probing light beam pass through different path lengths in the sample, wherein the partial beams are reflected or backscattered from at least two different depths in the sample;
• returning the reflected or backscattered partial beams into an analytical unit;
• producing an interference pattern in an analytical unit;
• and
• evaluating the interference pattern produced in an evaluating unit, using short coherent light for detecting the backscattering strength and the temperature-indicative, optical path lengths via the refractive index, in which the signal intensity of the reflected or backscattered partial beams is determined against the optical path length and the temperature displacement and sample temperature are determined from the temperature displacement of the signal intensity.