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High power picosecond parametric mid-IR source tunable between 1.7 and 2.6 μm
Applied Optics
|November 22, 2018
Summary
A new picosecond mid-infrared (mid-IR) light source was created using parametric downconversion. This tunable laser system achieves high average power, making it suitable for various scientific applications.
Area of Science:
- Lasers and Photonics
- Nonlinear Optics
Background:
- Development of tunable mid-IR sources is crucial for spectroscopy and materials science.
- Existing sources often lack sufficient power or tunability for advanced applications.
Purpose of the Study:
- To develop a high-average-power, wavelength-tunable picosecond mid-IR source.
- To utilize parametric downconversion for efficient light generation.
Main Methods:
- A two-stage system: optical parametric generator and optical parametric amplifier (OPA).
- Pumping achieved with an Yb:YAG thin-disk laser (77 kHz, 1030 nm, 1.3 ps pulses).
Main Results:
- Signal beam amplified to 9.2 W, idler beam to 5.4 W (at 43 W OPA pump).
- Wavelength tunability achieved: 1.70-1.95 μm (signal) and 2.2-2.6 μm (idler).
Conclusions:
- A simple, power-scalable, tunable picosecond mid-IR source was successfully demonstrated.
- The developed source offers significant potential for applications requiring high-power mid-IR light.
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