A Low-Pressure diode pumped Alkali Laser (LPAL) can provide a diffraction-limited high-power beam with high efficiency, scalable to multi-megawatt power with attractive size, weight, and cost.
Disruptive innovation
Pump lasers’ feedback through a rubidium atomic line filter in a compact external cavity narrows the pump spectrum to picometer range and locks its wavelength.
Unprecedented optical efficiency
Strong pump-photon absorption on rubidium vapor in low-pressure gas avoids parasitic heat processes and ionization, approaches ideal efficiency.
Diffraction-limited near-infrared output beam
Absence of internal parasitic heating, thin exit windows, and high atmospheric transparency minimize beam distortions.
Low maintenance
Electrically driven, fully enclosed, hermetically sealed. Inert gas curtains protect windows from excited rubidium vapor.
Affordable power-scalability
Increasing mass-production of compact pump units allows sub-linear power-cost curve. No other cost drivers.
No (apparent) limit to output power
Geometry is scalable. Stressors (volumetric power density) decrease with increasing power (fixed intensity). Detailed simulations scale. Prospects for multi-megawatt diffraction-limited output beams.
Learn more about the Low-Pressure diode-pumped Alkali Laser (LPAL)