A diode-laser pump source with small focus diameter for end- pumped systems |
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| Authors: | Wyss Chr P Lüthy W Weber H P Brovelli L Harder Ch Meier H P |
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| Institution: | (1) Institute of Applied Physics, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland;(2) Uniphase Laser Enterprise AG, Säumerstr. 4, CH-8803 Rüschlikon, Switzerland |
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| Abstract: | A pump source with eight angular multiplexed laser diodes is built. The diode laser emission is collimated and focused using relatively inexpensive aspherical lenses. The maximum output power is 6.3W at 970nm. The overall transmittance of the beam shaping optics is T=85%. The electrical, temporal and spectral properties are studied. The variances of the spatial intensity distribution are  r0x=99m and r0y=85m. The beam propagation factors are M2x=38 and M2y=112. The high intensity in the focus makes this system ideal for end pumping of solid state lasers. |
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