Negative Glow Type Metal Vapor Laser

A Self-Consistent Model for Negative Glow Discharge Lasers: The Hollow Cathode Helium Mercury Laser

A model for negative glow metal-vapor ion lasers that self-consistently describes the dynamics of the negative glow and the cathode sheath regions of the discharge has been developed. The model computes the electron energy distribution and the population of relevant excited states in the negative glow self-consistently with the charged particle fluxes and electric field distribution in the cath...

Does Laser Ablation Vapor Simulate Impact Vapor?

Introduction: Many laser experiments have been done to simulate hypervelocity impact vaporization [e.g., 15]. Laser simulation has a number of advantages. It can create high-temperature plumes with high repeatability and a high repetition cycle at a relatively low cost. Furthermore, because laser light can penetrate through a glass window (if chosen properly), the target material and vaporizati...

COPPEFv VAPOR LASER

Recombination Lasers in a Flowing Negative Glow Discharge

A fast gas flow through a negative glow plasma creates an afterglow region where supercooled electrons are separated from energetic beam electrons to produce a population inversion by collisional recombination. We report spatially-resolved electron temperature measurements of the afterglow plasma showing electron temperatures in the range of 750-1100 K under steady-state conditions. A 4 em long...

Advances in Laser Diode and OPSL Technologies Render Ion and Metal Vapor Lasers Obsolete

There are now many applications for visible and UV continuous wave lasers in the tens to hundreds of milliwatts power range, covering e.g. life sciences, metrology and inspection. Originally these were dominated by ion and HeCd metal vapor lasers due to their early availability. However, these sources are characterized by numerous well-known practical deficiencies (e.g., large size, electrical ...