Tunable, continuous-wave laser action using (F2+)A centers in lithium-doped KCl

Area of Science:

• Solid-state laser technology
• Materials science

Background:

• Development of tunable lasers is crucial for various spectroscopic applications.
• Color centers in alkali halides offer potential for laser operation.

Purpose of the Study:

• To demonstrate continuous-wave, broadly tunable laser action from an (F2+)A center in lithium-doped KCl.
• To characterize the laser's performance, including tunability, efficiency, and stability.

Main Methods:

• Utilized an (F2+)A center in lithium-doped KCl as the gain medium.
• Operated the laser in a continuous-wave (CW) mode.
• Measured laser output across a range of wavelengths.

Main Results:

• Achieved continuous-wave laser action tunable from approximately 2.00 to 2.50 micrometers.
• Demonstrated high laser efficiency and a low threshold for absorbed power.
• Confirmed laser capability retention after several weeks of room temperature storage.

Conclusions:

• The (F2+)A center in lithium-doped KCl is a promising gain medium for broadly tunable, CW lasers.
• The demonstrated stability and efficiency suggest practical applications for this laser system.