Multimodal fiber probe for simultaneous mid-infrared and Raman spectroscopy

Area of Science:

• Spectroscopy
• Materials Science
• Analytical Chemistry

Background:

• Mid-infrared (MIR) and Raman spectroscopy are crucial for chemical analysis.
• Simultaneous acquisition of MIR and Raman spectra can provide complementary information.
• Existing methods often require separate probes or complex setups.

Purpose of the Study:

• To develop a fiber probe for simultaneous mid-infrared (MIR) and Raman spectral acquisition.
• To demonstrate a novel design integrating both spectroscopic techniques into a single probe.
• To highlight the advantages of multimodal spectroscopic measurements.

Main Methods:

• A fiber probe with a zirconium dioxide (ZrO2) crystal tip was designed for attenuated total reflection (ATR) measurements.
• Mid-infrared ATR spectra were acquired using chalcogenide infrared (CIR) fibers.
• Raman spectra were obtained using silica fibers positioned perpendicular to the CIR fibers.

Main Results:

• The developed fiber probe successfully enabled simultaneous acquisition of MIR and Raman spectra in the 3100-2600 cm⁻¹ region.
• The probe design integrates MIR ATR and Raman spectroscopy efficiently.
• The multimodal approach offers synergistic benefits for sample analysis.

Conclusions:

• The developed fiber probe provides a powerful tool for simultaneous MIR and Raman spectroscopy.
• This multimodal approach simplifies spectral acquisition and enhances analytical capabilities.
• The probe is suitable for various applications requiring detailed chemical information.