Optical pulse generation with programmable positions in an actively mode-locked optical cavity

Area of Science:

• Photonics and Optical Engineering
• Laser Physics
• Nonlinear Optics

Background:

• Actively mode-locked (AML) optical cavities generate optical pulses.
• Pulse positions in AML cavities are typically fixed by cavity parameters and driving signals.
• Precise control over optical pulse positions is crucial for advanced optical systems.

Purpose of the Study:

• To propose and demonstrate a novel approach for generating optical pulses with programmable positions in an AML optical cavity.
• To achieve precise control over optical pulse generation, including number, interval, and position distribution.
• To investigate optical pulse compression within this novel AML system.

Main Methods:

• Utilizing an actively mode-locked optical cavity.
• Employing a periodic arbitrary waveform to control cavity gain modulation.
• Manipulating maximum transmission points of the optical cavity to program pulse positions.
• Leveraging optical field superposition for pulse width compression.

Main Results:

• Experimental demonstration of optical pulses with programmable positions.
• Successful generation of pulses with controllable numbers, intervals, and distributions.
• Achieved optical pulse compression, resulting in approximately 34-ps pulse widths.
• Demonstrated ultra-low pulse intervals of about 200 ps and linear positional distribution.

Conclusions:

• The proposed method offers a novel way to generate optical pulses with programmable positions in AML cavities.
• This technique enables precise control over optical pulse characteristics, including timing and width.
• The findings have potential applications in areas requiring flexible and precisely timed optical pulses.