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Refined Sellmeier equations for AgGaSe2 up to 18 µm
Applied Optics
|March 10, 2021
Summary
Refined Sellmeier equations for silver gallium selenide (AgGaSe2) accurately predict phase-matching for CO2 laser frequency conversion. These equations cover a wide spectral range for both upconversion and downconversion applications.
Area of Science:
- Nonlinear optics
- Solid-state materials science
Background:
- Silver gallium selenide (AgGaSe2) is a nonlinear optical crystal.
- Accurate Sellmeier equations are crucial for predicting crystal performance in optical applications.
Purpose of the Study:
- To develop and present refined Sellmeier equations for AgGaSe2.
- To validate these equations against experimental phase-matching data.
Main Methods:
- Fitting experimental phase-matching data to the Sellmeier equation model.
- Comparing predicted phase-matching angles with literature values.
Main Results:
- The refined Sellmeier equations provide good reproduction of phase-matching angles.
- The equations are valid for frequency upconversion (1.7652-10.5910 µm) and downconversion (1.85-18 µm) of CO2 laser radiation.
Conclusions:
- The presented Sellmeier equations are reliable for AgGaSe2.
- These equations will aid in the design and optimization of optical devices utilizing AgGaSe2 for CO2 laser frequency conversion.
