Diode-pumped solid-state laser

DPSS ( diode pumped solid state; DPSSL also ) is the abbreviation for a pumped with the radiation of diode solid state lasers. Diode-pumped solid -state lasers solve more and more usual, pumped with gas discharge lamps, solid-state lasers from.

Construction

The laser crystal of the solid state laser is usually a yttrium - aluminum -garnet ( YAG ) crystal ( host crystal ) in slices, plate, or rod-shaped fiber doped with erbium, ytterbium or neodymium. However, other host crystals are used, such as: YAlO3 ( YALO ), YVO4 ( yttrium ), YLiF4 ( YLF ), tungstates (KGD ( WO4 ) 2, KY ( WO4 ) 2), as well as sapphire and Zinkchalkogenide.

The allocations result in different pumping and emission wavelengths:

• Ytterbium: diode pumping wavelength at 930 .. 945 nm, emission at 1029 nm
• Neodymium: pumping at 808 nm or 888 nm, emission at 1064 nm
• Erbium: pumping at 980 nm, emission ( or gain, see EDFA) at 1550 nm

Compared to the pump with gas discharge lamps has the pump diode laser with a number of advantages:

• The electric- optical conversion efficiency of diode lasers is higher than that of flash lamps
• The pump lasers produce only that wavelength which serves for excitation of the laser medium - this reduces the heating of
• The lower heating results due to lower thermal stresses to higher power densities and better beam quality
• The laser diodes have a greater life span than gas discharge lamps

Diode pumped, for example, be Nd: YAG laser ( laser pointer), where the 1064 nm line of the neodymium -doped crystal is frequency- doubled using a KTP crystal, so that laser beam is provided with wavelength of 532 nm.

Disk lasers and fiber lasers are DPSS laser principle.

• Laser beam source
• Abbreviation