Direct and passive subnanosecond pulse-train generation from a self-injection-seeded ultraviolet solid-state laser

Area of Science:

• Laser physics
• Quantum optics
• Materials science

Background:

• Generating short pulse trains is crucial for various applications.
• Existing methods often require complex setups or continuous wave operation.

Purpose of the Study:

• To propose and demonstrate a passive self-injection-seeding scheme for generating short pulse trains.
• To simplify the generation of subnanosecond pulse trains from pulsed lasers.

Main Methods:

• A single subnanosecond pulse is generated from a short-cavity seeding laser.
• The pulse is regeneratively amplified in the same gain medium until gain quenching.
• A solid-state laser medium (Ce(3+):LuLiF(4)) is pumped by a standard 10-ns laser.

Main Results:

• A passive self-injection-seeding scheme was successfully implemented.
• Short-pulse trains were generated without requiring continuous wave operation or external seeding lasers.
• An ultraviolet subnanosecond pulse train was directly generated from a Ce(3+):LuLiF(4) solid-state laser.

Conclusions:

• The proposed passive self-injection-seeding scheme offers a simplified approach for generating short pulse trains.
• This technique is versatile and applicable to various pulsed laser systems.
• Direct generation of ultraviolet subnanosecond pulse trains from solid-state lasers is achievable with this method.