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Published on: July 12, 2017
Narrowband Er:YAG nonplanar ring oscillator at 1645 nm
Da-Wun Chen1, Paul M Belden, Todd S Rose
1Photonics Technology Department, Electronics and Photonics Laboratory, The Aerospace Corporation, 2350 East El Segundo Boulevard, El Segundo, California 90245, USA. dawun.chen@aero.org
Optics Letters
|April 12, 2011
Summary
We achieved 1645 nm narrowband operation using an Er:YAG nonplanar ring oscillator. This laser system produced 0.5 W of continuous wave power with a narrow 21 kHz linewidth.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Erbium-doped Yttrium Aluminum Garnet (Er:YAG) lasers are crucial for various applications.
- Achieving narrowband operation at specific wavelengths is essential for high-resolution spectroscopy and optical communications.
- Nonplanar ring oscillators (NPROs) offer advantages in single-frequency operation and stability.
Purpose of the Study:
- To demonstrate narrowband operation of a monolithic Er:YAG nonplanar ring oscillator at 1645 nm.
- To investigate the performance characteristics, including output power and linewidth, of the developed laser system.
- To explore the potential of resonant pumping for efficient laser operation.
Main Methods:
- Fabrication of a monolithic Er:YAG nonplanar ring oscillator.
- Resonant pumping of the Er:YAG crystal at 1532 nm.
- Characterization of the laser output, including power measurements and spectral linewidth analysis.
Main Results:
- Successful narrowband operation of the Er:YAG NPRO at 1645 nm was achieved.
- Unidirectional continuous-wave (cw) output power of up to 0.5 W was obtained.
- A narrow spectral linewidth of 21 kHz was measured for the laser output.
Conclusions:
- The monolithic Er:YAG NPRO is a viable platform for generating narrowband 1645 nm radiation.
- Resonant pumping at 1532 nm enables efficient laser operation with significant output power.
- The demonstrated narrow linewidth is promising for applications requiring high spectral purity.
