Solid-state laser system for laser cooling of sodium

We demonstrate a frequency-stabilized, all-solid laser source at 589 nm with up to 800 mW output power. The laser relies on sum-frequency generation from two laser sources at 1064 nm and 1319 nm through a PPKTP crystal in a doubly resonant cavity. We obtain conversion efficiencies as high as 2 W/W2 after careful optimization of the cavity parameters. The output wavelength is tunable over 60 GHz, which is sufficient to lock on the sodium D2 line. The robustness, beam quality, spectral narrowness and tunability of our source make it an alternative to dye lasers for atomic physics experiments with sodium atoms.

[1]  W. O. Saxton,et al.  Measurement of the Transverse Electric Field Profile of Light by a Self-referencing Method with Direct Phase Determination References and Links " Measurement of Atmospheric Wavefront Distortion Using Scattered Light from a Laser Guide-star, " , 2022 .

[2]  Ken-ichi Ueda,et al.  589 nm Light Source Based on Raman Fiber Laser , 2004 .

[3]  Ouali Acef,et al.  Absolute value of the d 36 nonlinear coefficient of AgGaS 2 : prospect for a low-threshold doubly resonant oscillator-based 3:1 frequency divider , 1997 .

[4]  M. Convery,et al.  Efficient, all-solid-state, Raman laser in the yellow, orange and red. , 2004, Optics express.

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

[6]  Large atom number Bose-Einstein condensate of sodium. , 2006, The Review of scientific instruments.

[7]  M. Oron,et al.  Green and ultraviolet quasi-phase-matched second harmonic generation in bulk periodically-poled KTiOPO4 , 1997 .

[8]  J. D. Vance,et al.  Continuous-Wave, All-Solid-State, Single-Frequency 400-mW Source at 589 nm Based on Doubly Resonant Sum-Frequency Mixing in a Monolithic Lithium Niobate Resonator. , 1998, Applied optics.

[9]  Y. Kaneda,et al.  Theoretical treatment, simulation, and experiments of doubly resonant sum-frequency mixing in an external resonator. , 1997, Applied optics.

[10]  Ady Arie,et al.  Tunable midinfrared source by difference frequency generation in bulk periodically poled KTiOPO4 , 1999 .

[11]  Fiftyfold improvement in the number of quantum degenerate fermionic atoms. , 2003, Physical review letters.

[12]  Pierre Lemonde,et al.  75%-Efficiency blue generation from an intracavity PPKTP frequency doubler , 2005 .

[13]  Feng-Lei Hong,et al.  Efficient 494 mW sum-frequency generation of sodium resonance radiation at 589 nm by using a periodically poled Zn:LiNbO3 ridge waveguide. , 2009, Optics express.

[14]  J. D. Vance,et al.  Sum-frequency generation of continuous-wave sodium D(2) resonance radiation. , 1997, Optics letters.

[15]  Optically plugged quadrupole trap for Bose-Einstein condensates , 2004, cond-mat/0406341.

[16]  J R Taylor,et al.  Watts-level frequency doubling of a narrow line linearly polarized Raman fiber laser to 589nm. , 2005, Optics express.

[17]  J. Dalibard,et al.  Sum-frequency generation of 589 nm light with near-unit efficiency. , 2008, Optics express.

[18]  B. Sumpf,et al.  High power 404 nm source based on second harmonic generation in PPKTP of a tapered external feedback diode laser. , 2008, Optics express.

[19]  Carsten Langrock,et al.  Efficient yellow-light generation by frequency doubling a narrow-linewidth 1150 nm ytterbium fiber oscillator. , 2006, Optics letters.

[20]  Gerald T Moore,et al.  20 W of continuous-wave sodium D2 resonance radiation from sum-frequency generation with injection-locked lasers. , 2003, Optics letters.

[21]  A. A. Brailove,et al.  Sum frequency generation of sodium resonance radiation. , 1989, Applied optics.

[22]  K. B. Davis,et al.  Bose-Einstein Condensation in a Gas of Sodium Atoms , 1995, EQEC'96. 1996 European Quantum Electronic Conference.

[23]  G. Boyd,et al.  Parametric Interaction of Focused Gaussian Light Beams , 1968 .

[24]  S. V. Chernikov,et al.  6-W Average power green light generation using seeded high power ytterbium fibre amplifier and periodically poled KTP , 2000 .

[25]  Fredrik Laurell,et al.  Efficient all solid-state continuous-wave yellow-orange light source. , 2005, Optics express.

[26]  Wolfgang Ketterle,et al.  Large atom number Bose-Einstein condensate machines , 2006 .

[27]  M. Fejer,et al.  Quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO 3 , 1995 .

[28]  K. Jones,et al.  All-optical generation and photoassociative probing of sodium Bose–Einstein condensates , 2006, physics/0602108.

[29]  V. Bagnato,et al.  Achievement of quantum degeneracy in a Na-QUIC trap in Brazil: an in situ observation , 2005, cond-mat/0508425.

[30]  Zachary Dutton,et al.  Near-Resonant Spatial Images of Confined Bose-Einstein Condensates in a 4-Dee Magnetic Bottle , 1998, cond-mat/9804278.