Advantages:
- Utilizing off-the-shelf components reduces production expenses significantly.
- Applicable across visible and near-infrared spectrum, maximizing flexibility in applications.
- Achieving significant linewidth reduction without compromising high power output efficiency.
Summary:
The primary challenge in high-power diode lasers is balancing output power and spectral linewidth. Traditional methods to narrow the linewidth often involve expensive components like volume Bragg gratings, which limit power output, particularly in single-mode operations. This trade-off hinders applications requiring both high power and spectral precision, such as Raman spectroscopy, where measurement efficiency and accuracy depend on the laser's spectral characteristics.
Our technology integrates a dispersive prism with a thin etalon for retroreflective feedback, achieving a twenty-fold reduction in the linewidth of a multimode laser diode to 70 picometers while maintaining an output power of up to 4 watts. This cost-effective and versatile method utilizes off-the-shelf components, making it suitable across the visible and near-infrared spectrum. This innovative approach significantly enhances performance for a variety of scientific and industrial applications, offering improved spectral precision without sacrificing power.
(a) Schematic of prism-etalon external cavity diode laser.
(b) Photograph of prism-etalon external cavity diode laser implemented with flexure adjusters.
Desired Partnerships:
- License
- Sponsored Research
- Co-Development