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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Modified Šolc notch filter for deep ultraviolet applications.

Sergei Nikitin¹, Charles Manka, Jacob Grun

¹Research Support Instruments, Lanham, Maryland, USA. nikitins@researchsupport.com

|April 10, 2013

Summary

This summary is machine-generated.

We developed a modified Šolc notch filter for deep ultraviolet (DUV) Raman spectroscopy. This filter effectively blocks specific wavelengths, offering multiple blocking points for tunable lasers.

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Area of Science:

Optics and Photonics
Spectroscopy
Materials Science

Background:

Šolc notch filters are crucial for blocking specific wavelengths in optical systems.
Deep ultraviolet (DUV) spectroscopy presents unique challenges due to high photon energies and material absorption.
Raman spectroscopy applications, particularly those using tunable lasers, benefit from efficient and versatile wavelength filtering.

Purpose of the Study:

To design and test a modified optical Šolc notch filter optimized for the deep ultraviolet (DUV) spectral range (190-300 nm).
To evaluate the filter's capability to block a specific wavelength and generate a sequence of blocked wavelengths.
To assess the filter's utility for Raman applications employing tunable lasers.

Main Methods:

Design of a modified Šolc notch filter configuration tailored for DUV performance.
Experimental testing of the filter's spectral characteristics, including transmission minima and extinction ratios.
Application of the filter in Raman spectroscopy experiments, specifically analyzing Teflon samples excited at 248.4 nm.

Main Results:

The modified Šolc notch filter demonstrated high performance in the DUV range.
Extinction ratios exceeding 240 were achieved.
Transmission minima exhibited a narrow full width at half-maximum (FWHM) of approximately 1 nm.
The filter successfully blocked a specific wavelength and produced additional blocked wavelengths.
Demonstrated utility in collecting Raman spectra of Teflon excited at 248.4 nm.

Conclusions:

The modified optical Šolc notch filter is effective for DUV applications.
The filter's ability to provide multiple blocked wavelengths is advantageous for tunable laser Raman spectroscopy.
The achieved performance metrics (extinction ratio, FWHM) indicate suitability for demanding spectroscopic tasks.