Simple and versatile dual-signal wave optical parametric oscillator.

Area of Science:

• Optics and Photonics
• Nonlinear Optics
• Laser Physics

Background:

• Optical parametric oscillators (OPOs) are crucial for generating tunable laser light.
• Controlling the output characteristics of OPOs, such as wavelength and pulse timing, is essential for various applications.

Purpose of the Study:

• To demonstrate a synchronously pumped optical parametric oscillator (OPO) with flexible wavelength delivery.
• To enable switching between simultaneous and single-wavelength signal pulse output from the OPO.

Main Methods:

• Utilizing group-velocity mismatch between interacting pump and signal pulses within the OPO cavity.
• Implementing a simple cavity-length adjustment to control the OPO's operational regime.

Main Results:

• The developed OPO successfully delivers signal pulses at two distinct wavelengths.
• The system allows for simultaneous or sequential delivery of these dual-wavelength pulses.
• Switching between output modes is achieved via minor cavity-length modifications.

Conclusions:

• The synchronously pumped OPO offers versatile dual-wavelength pulse generation.
• The demonstrated method provides a straightforward way to tune OPO output characteristics.
• The system produces synchronous, near transform-limited tunable signal pulses.