Powerful narrow-line source of blue light for laser cooling Yb/Er and Dysprosium atoms

This report for the first time presents the results of parameter optimisation of ultra-narrow-linewidth frequency-doubled CW Ti:Sapphire lasers pumped with 12.5-18.5 W of 532-nm light. Proposed laser systems are designed for atom cooling and provide output radiation power of more than 1.5 W at 399/401 nm (Ytterbium/Erbium) and more than 1 W at 421 nm (Dysprosium) pumped at 18.5 W. The output power of single-frequency radiation at 421 nm achieved during the present work is the highest published to-date for a commercially available system achieving a 10 kHz linewidth.

[1]  H. Kumagai,et al.  Development of a high-power deep-ultraviolet continuous-wave coherent light source for laser cooling of silicon atoms. , 2000, Optics letters.

[2]  K. Midorikawa,et al.  Efficient frequency doubling of 1-W continuous-wave Ti:sapphire laser with a robust high-finesse external cavity. , 2003, Applied optics.

[3]  Flavio C. Cruz,et al.  Frequency doubled and stabilized all-solid-state Ti:sapphire lasers , 2002 .

[4]  Erling Riis,et al.  Efficient cw high-power frequency doubling in periodically poled KTP , 2003 .

[5]  Sergey Kobtsev,et al.  Ultra-narrow-linewidth combined CW Ti:sapphire/dye laser for atom cooling and high-precision spectroscopy , 2007, SPIE LASE.

[6]  Sergey Kobtsev,et al.  Combined cw single-frequency ring dye/Ti:sapphire laser , 2006 .

[7]  Theo Rasing,et al.  Performance optimization of an external enhancement resonator for optical second-harmonic generation , 2002 .

[8]  Sergey Kobtsev,et al.  Efficient second-harmonic generation of CW radiation in an external optical cavity using non-linear crystal BIBO , 2007, Laser Optics.

[9]  E S Polzik,et al.  Frequency doubling with KNbO(3) in an external cavity. , 1991, Optics letters.

[10]  Yong-Ho Cha,et al.  External-cavity frequency doubling of a 5-W 756-nm injection-locked Ti:sapphire laser. , 2008, Optics express.

[11]  Dmitry Budker,et al.  Measurement of hyperfine structure and isotope shifts in the Dy 421 nm transition. , 2009, Optics letters.

[12]  Norman Hodgson,et al.  Solid State Lasers XVII: Technology and Devices , 2007 .

[13]  Jeroen C. J. Koelemeij,et al.  High-power frequency-stabilized laser for laser cooling of metastable helium at 389 nm , 2005 .