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Injection-seeded single-longitudinal-mode Ti:Sapphire laser with no active stabilization
Optics Express
|September 10, 2020
Summary
We developed a novel injection-seeded nanosecond Titanium-Sapphire laser for stable single-mode operation without active feedback. This laser achieves 6-mJ pulses with high efficiency, offering a new design for tunable laser applications.
Area of Science:
- Laser Physics
- Quantum Optics
- Materials Science
Background:
- Achieving stable single-longitudinal-mode operation in pulsed lasers is crucial for many applications.
- Traditional methods often rely on complex feedback loops for cavity stabilization.
- Titanium-Sapphire (Ti:Sapphire) lasers are versatile but can be challenging to operate in a single mode.
Purpose of the Study:
- To demonstrate a novel, passively stable, injection-seeded nanosecond Ti:Sapphire laser.
- To achieve single-longitudinal-mode operation without active cavity stabilization.
- To investigate the performance and underlying physics of this new laser design.
Main Methods:
- Utilized an injection-seeded nanosecond Ti:Sapphire laser architecture.
- Employed a short cavity design with an intracavity dispersive prism for wavelength pre-selection.
- Performed numerical simulations incorporating extra cavity losses to model laser behavior.
Main Results:
- Achieved stable single-longitudinal-mode operation without active feedback.
- Generated 6-mJ transform-limited pulses at 807 nm.
- Observed a high slope efficiency of 43% and validated simulation results with experimental data.
Conclusions:
- The novel cavity design with an intracavity prism enables stable, single-mode operation in injection-seeded Ti:Sapphire lasers.
- Passive cavity stabilization simplifies the laser system and reduces complexity.
- The study provides insights into laser mode formation dynamics and validates simulation accuracy.
