Pulsed metal-vapor recombination laser

Area of Science:

• Laser Physics
• Atomic and Molecular Physics
• Plasma Physics

Background:

• Electron-ion recombination is a fundamental process in plasmas.
• Visible lasers are crucial for various scientific and technological applications.
• Previous recombination lasers often required complex excitation mechanisms.

Purpose of the Study:

• To demonstrate a visible cadmium-ion laser.
• To investigate the electron-ion recombination pumping mechanism for laser operation.
• To achieve laser oscillation in a sealed discharge tube using a simple excitation method.

Main Methods:

• Utilized a sealed discharge tube filled with low-pressure helium gas.
• Employed a simple capacitor discharge for excitation.
• Observed laser oscillation in specific transitions of Cadmium ions (Cd II).

Main Results:

• Achieved visible laser oscillation in Cd II transitions: 4f (2)F(7/2)-5d(2)D(5/2) and 4f(2)F(5/2)-5d (2)D(3/2).
• Demonstrated laser operation over a range of discharge parameters.
• Successfully operated the laser in a sealed tube configuration.

Conclusions:

• A novel visible cadmium-ion recombination laser has been successfully demonstrated.
• The electron-ion recombination pumping mechanism is effective for visible laser generation.
• This work represents the first report of laser oscillation in a sealed discharge tube using a simple capacitor discharge for this type of laser.