Patent ID: 6101199
Filing Date: 2000-08-08
Classification: H01S,Y10S

Abstract:
A high-efficiency cladding pumping fiber laser apparatus comprising:a laser fiber having cladding with its core doped with at least one active species,at least one laser diode array module,an imaging optical system,wherein said imaging optical system is disposed between said laser diode module and an aperture of said laser fiber and focuses the beam from said module onto the aperture of said laser fiber; and wherein said laser diode array module comprises at least one laser diode array with a beam having fast and slow axis divergence, a collimating structure, and an optical relay system; and wherein said optical relay system has at least one optical element for beam relay and is disposed between said laser diode array and said laser fiber, whereby the laser beam from said laser diode array is relayed to a more distant point with the beam spot dimension being kept substantially unchanged.