Uniform pump scheme for a LD face-pumped Nd:YAG slab amplifier

A new pump-shaping scheme for a LD face-pumped Nd:YAG slab laser amplifier is proposed, aiming to achieve uniform pump distributions. Plano-concave cylindrical mirror arrays are used to homogenize the pump distributions in the LD slow axes, and meanwhile optical-waveguide structures are used for the LD fast axes. Simulations based on ray tracing method indicate that the scheme effectively realizes uniform pump intensity distributions. The fluorescence distributions and small signal gains at different locations both verify the pump uniformity reaches higher than 90%.

[1]  Hagop Injeyan,et al.  High brightness diode-pumped solid-state laser development , 1993 .

[2]  Rodger C. Hilyard,et al.  Diode array pumped kilowatt laser , 1997 .

[3]  R J Beach.  Theory and optimization of lens ducts. , 1996, Applied optics.

[4]  Ming Gong,et al.  Compact corner-pumped Nd:YAG/YAG composite slab laser , 2010 .

[5]  Yung-Fu Chen,et al.  Analytical model for the design of fiber-coupled laser-diode end-pumped lasers , 1997 .

[6]  D. Jaque,et al.  Thermal lens and heat generation of Nd:YAG lasers operating at 1.064 and 1.34 microm. , 2008, Optics express.

[7]  C A Rhodes.  Transmittance properties of a curved specularly reflecting duct irradiated by a collimated beam. , 1967, Applied optics.

[8]  Qiang Liu,et al.  Corner-pumped Yb: yttrium aluminum garnet slab laser emitted up to 1kW , 2006 .

[9]  W. Xie,et al.  Influence of the thermal effect on the TEM00 mode output power of a laser-diode side-pumped solid-state laser. , 2000, Applied optics.

[10]  王石语 Wang Shiyu,et al.  Effect of the Pumping Light on the of the Solid-State Lasers , 2012 .

[11]  Huan Liu,et al.  A tunable corner-pumped Nd:YAG/YAG composite slab CW laser , 2012 .

[12]  Kong Yuan-yuan,et al.  Study on the Beam-shaping of high-power LD Bar Arrays , 2006 .

[13]  I.A. Shcherbakov,et al.  Thermooptical distortions in a Nd:YAG slab with a zigzag beam propagation , 2011, 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC).

[14]  蒋新颖 Jiang Xinying,et al.  End-pumped coupling system based on large-aperture laser diode array , 2012 .