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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Single-electrode-tuned mode-hop-free tunable laser based on ring coupled cavity
1Centre for Integrated Optoelectronics, State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, PR China.
Optics Express
|December 10, 2009
Summary
A new tunable laser design offers mode-hop-free tuning using a single electrode and a coupled ring cavity. This innovative laser achieves a wide tuning range with high selectivity at low injection currents.
Area of Science:
- Photonics and Laser Technology
- Optical Engineering
- Semiconductor Devices
Background:
- Tunable lasers are crucial for applications requiring precise wavelength control.
- Existing tunable lasers often face limitations in tuning range, mode-hop-free operation, or complexity.
- Single-electrode tuning offers a simpler and more compact laser design.
Purpose of the Study:
- To propose and analyze a novel tunable laser architecture.
- To achieve mode-hop-free single-electrode tuning.
- To demonstrate a wide tuning range and high single-mode selectivity.
Main Methods:
- A laser design integrating a passive ring resonator with a Fabry-Perot (FP) cavity.
- Utilizing a single tuning electrode to control both the ring resonator and FP cavity.
- Numerical analysis to evaluate tuning range, selectivity, and operational current.
Main Results:
- The proposed laser achieves mode-hop-free operation via single-electrode tuning.
- A wide mode-hop-free tuning range exceeding 6 nm was numerically demonstrated.
- High single-mode selectivity was achieved with an injection current below 100 mA.
Conclusions:
- The novel coupled ring cavity laser design enables efficient, mode-hop-free tuning.
- This architecture offers a promising solution for compact and high-performance tunable lasers.
- The demonstrated performance metrics suggest suitability for various photonic applications.
