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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

Optical parametric generation in CdSiP2.

O Chalus¹, P G Schunemann, K T Zawilski

¹ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain.

|December 18, 2010

Summary

This summary is machine-generated.

Researchers achieved efficient picosecond pulse generation in the near- and mid-infrared using the novel nonlinear material cadmium silicon phosphide (CdSiP2). This advancement utilized optical parametric generation for potential applications in various spectroscopic fields.

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Area of Science:

Nonlinear optics
Solid-state physics
Materials science

Background:

Efficient generation of tunable picosecond pulses is crucial for advanced spectroscopic techniques.
Exploring novel nonlinear optical materials is essential for improving laser performance and expanding wavelength coverage.
Cadmium silicon phosphide (CdSiP2) is a promising nonlinear crystal with potential for infrared applications.

Purpose of the Study:

To investigate the potential of CdSiP2 for efficient picosecond pulse generation in the near- and mid-infrared regions.
To demonstrate optical parametric generation (OPG) in CdSiP2 pumped by a Nd:YVO4 laser.
To characterize the generated signal and idler pulses, including power, wavelength, and duration.

Main Methods:

Utilized a single-pass optical parametric generation setup.
Employed an 8-mm-long CdSiP2 crystal cut for type I noncritical phase matching (e→oo).
Pumped the system at 1.064 μm using an amplified mode-locked Nd:YVO4 laser operating at a 100 kHz repetition rate.

Main Results:

Achieved efficient generation of picosecond pulses in the near- and mid-infrared.
Obtained an average idler power of 154 mW at 6.204 μm and 1.16 W of signal at 1.282 μm.
Measured photon conversion efficiencies of 15% for the idler and 23% for the signal, with signal pulse durations of 6.36 ps.

Conclusions:

CdSiP2 is a highly efficient nonlinear material for generating picosecond pulses in the near- and mid-infrared.
The demonstrated OPG process in CdSiP2 offers a viable route for producing tunable ultrashort pulses.
The results highlight the potential of CdSiP2 for applications requiring high-power, ultrashort infrared light sources.