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Updated: Feb 15, 2026
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
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Efficient, 2-5 μm tunable CdSiP2 optical parametric oscillator pumped by a laser source at 1.57 μm
Optics Letters
|January 13, 2018
Summary
We demonstrate novel Cadmium Silicon Phosphide (CdSiP2)-based optical parametric oscillators. These devices achieve high conversion efficiency and tunable output in the mid-infrared spectrum using eye-safe laser pumping.
Area of Science:
- Nonlinear Optics
- Solid-State Lasers
- Infrared Spectroscopy
Background:
- Optical parametric oscillators (OPOs) are crucial for generating tunable laser light.
- CdSiP2 is a promising nonlinear crystal for infrared applications.
- Eye-safe laser sources are desirable for various applications.
Purpose of the Study:
- To demonstrate the first CdSiP2-based optical parametric oscillators.
- To evaluate their performance when pumped by eye-safe lasers.
- To explore the tuning capabilities of these devices.
Main Methods:
- Utilizing CdSiP2 crystals in an optical parametric oscillator configuration.
- Pumping the OPOs with eye-safe Q-switched nanosecond lasers at 1.57 μm.
- Characterizing the output energy, conversion efficiency, and tuning range.
Main Results:
- Achieved 40% optical conversion efficiency.
- Generated 10 mJ of output energy near degeneracy (3 μm region).
- Demonstrated angle tuning from 2.28 μm to 5.05 μm in the mid-infrared.
Conclusions:
- CdSiP2 is an effective material for eye-safe laser-pumped OPOs.
- These devices offer high efficiency and broad tunability in the mid-infrared.
- Potential applications in spectroscopy, remote sensing, and countermeasures.
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