Q-switched resonantly diode-pumped Er3+:YAG laser with fiberlike geometry.

Crystalline fiberlike diode-pumped laser systems offer a convenient way to obtain compact, robust, and efficient operation whenever long active media are required. One of these cases is the diode-pumped Er(3+):YAG laser emitting at 1.6 microm, where long crystals are needed to avoid the upconversion processes. By resonantly pumping the (4)I(13/2) level around 1.53 microm, and by confining the pump radiation into the crystal by total internal reflection, a maximum output power of 14.5 W in cw mode is reached when pumped with approximately 40 W of absorbed power. In Q-switching mode, pulse energies of more than 8 mJ were obtained at a repetition rate of 90 Hz, limited by coating damage.

[1]  S. Setzler,et al.  Efficient 1645-nm Er:YAG laser. , 2004, Optics letters.

[2]  S. Setzler,et al.  Resonantly pumped eyesafe erbium lasers , 2005, IEEE Journal of Selected Topics in Quantum Electronics.

[3]  Dmitri Z. Garbuzov,et al.  Resonantly diode laser pumped 1.6-μm-erbium-doped yttrium aluminum garnet solid-state laser , 2005 .

[4]  K. Spariosu,et al.  Efficient Er:YAG laser operating at 1645 and 1617 nm , 2006, IEEE Journal of Quantum Electronics.

[5]  Larry D. Merkle,et al.  Resonant pumping and upconversion in 1.6 μm Er 3+ lasers , 2007 .

[6]  S. Mirov,et al.  Highly efficient, narrow-linewidth, and single-frequency actively and passively Q-switched fiber-bulk hybrid Er:YAG lasers operating at 1645 nm. , 2008, Optics express.

[7]  Marc Eichhorn.  Transient wavelength performance of 1.53 microm InP laser diodes for pumping of Er3+-doped solid-state lasers. , 2008, Applied optics.

[8]  M. Eichhorn,et al.  High-power resonantly diode-pumped CW Er3+:YAG laser , 2008 .

[9]  M. Eichhorn.  Thermal lens effects in an Er3+:YAG laser with crystalline fiber geometry , 2009 .

[10]  W. Clarkson,et al.  Influence of energy-transfer-upconversion on threshold pump power in quasi-three-level solid-state lasers. , 2009, Optics express.

[11]  J.W. Kim,et al.  Fiber-Laser-Pumped Er:YAG Lasers , 2009, IEEE Journal of Selected Topics in Quantum Electronics.

[12]  Fluorescence reabsorption and its effects on the local effective excitation lifetime , 2009 .

[13]  J. Munch,et al.  Resonantly diode-pumped continuous-wave and Q-switched Er:YAG laser at 1645 nm. , 2010, Optics express.

[14]  Marc Eichhorn,et al.  Quasi-three-level solid-state lasers in the near and mid infrared based on trivalent rare earth ions , 2008, 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC).