Modified calculation method of relative sensitivity for fluorescence intensity ratio thermometry

Area of Science:

• Materials Science
• Spectroscopy
• Quantum Electronics

Background:

• Fluorescence Intensity Ratio (FIR) thermometry is a technique used for temperature measurements.
• Accurate calculation of relative sensitivity (Sr) is crucial for the reliability of FIR thermometry.
• Existing methods for calculating Sr may contain inaccuracies.

Purpose of the Study:

• To discuss and analyze the calculation method of relative sensitivity (Sr) for FIR thermometry.
• To identify the source of deviation in the conventional Sr calculation method.
• To propose a modified expression for Sr to improve accuracy and comparability.

Main Methods:

• Calculated Sr using its original definition for Tm3+ transitions (F3-H6 and H4-H6).
• Compared the original Sr calculation with the conventional method.
• Identified the neglect of an offset as the cause of deviation.

Main Results:

• The original Sr calculation significantly deviated from the conventional method.
• The deviation was attributed to the omission of an offset in the conventional method.
• A modified Sr expression was proposed.

Conclusions:

• The proposed modified Sr expression accurately reflects FIR technology's performance.
• The modified expression allows for precise comparison of Sr values across different methods.
• This work enhances the precision and reliability of FIR thermometry.