DIODE-PUMPED ALKALI METAL VAPOUR LASER Russian patent published in 2013 - IPC H01S3/227 H01S3/933 

FIELD: physics.

SUBSTANCE: diode-pumped alkali metal vapour laser has a laser chamber with an inner cavity with transparent end windows, a sealed closed loop for circulating the active medium, passing through the inner cavity of the chamber in a direction which is transverse to the optical axis of the chamber, a laser diode-based pumping radiation source and optical means of forming and focusing pumping radiation into the inner cavity of the chamber. The active medium is a mixture of a buffer gas and alkali metal vapour. The pumping radiation source is placed on the side of the end window of the laser chamber such that the direction of the pumping radiation generated by the source is directed longitudinally relative the direction of the optical axis of the chamber. The optical means of forming and focusing pumping radiation are made and installed to form, in the active medium in the same plane which is transverse to the optical axis of the chamber, an image of the radiating area of the pumping radiation source in the direction of its short side and a Fourier image of the radiating area of the pumping radiation source in the direction of its long side.

EFFECT: providing more efficient conversion of pumping energy to laser energy and high efficiency of the laser.

5 cl, 3 dwg