Abstract

We present three different dual-wavelength laser architectures to obtain cw blue radiations. They are based on diode-pumped Nd-doped crystals lasing on the 4F3/2-4I11/2 and 4F3/2-4I9/2 transitions. Blue radiations were achieved by intracavity sum frequency operation in a BiB3O6 crystal. We report a maximum output blue power of 303 mW at 491 nm for a pump power of 10 W.

© 2005 Optical Society of America

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References

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  1. W.P. Risk, T.R. Gosnell and A.V. Nurmikko, Compact Blue-Green Lasers, (Cambridge University Press, 2003).
    [CrossRef]
  2. C. Czeranowsky, E. Heumann, G. Huber, �??All-solid-state continuous wave frequency-doubled Nd:YAG-BiBO laser with 2.8-W output power at 473 nm,�?? Opt. Lett. 28, 432-434 (2003).
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  12. H.M. Kretschmann, G. Huber, �??A discretely tunable continuous wave doubly resonant intracavity sum frequency mixer at 549 nm, 598 nm, 602 nm and 618 nm: output performance and noise characterization,�?? in Technical Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Baltimore, Maryland, 1999), pp. 226.
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  14. F. Balembois, F. Falcoz, F. Kerboull, F. Druon, P. Georges, A. Brun, �??Theoretical and experimental investigations of small-signal gain for a diode-pumped q-switched Cr:LiSAF Laser,�?? IEEE J. Quantum Electron. 33, 269-278, (1997).
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Appl. Phys. B

H. Zellmer, P. Riedel, A. Tunnermann, �??Visible upconversion lasers in praseodymium-ytterbium-doped fibers,�?? Appl. Phys. B 69, 417-421 (1999).
[CrossRef]

Y.F. Chen, �??cw dual-wavelength operation of a diode-end-pumped Nd:YVO4 laser,�?? Appl. Phys. B 70, 475-478 (2000).
[CrossRef]

IEEE J. Quantum Electron.

F. Auge, F. Druon, F. Balembois, P. Georges, A. Brun, F. Mougel, G. Aka and D. Vivien, �??Theoretical and experimental investigations of a diode-pumped quasi-three-level laser: the Yb3+-doped Ca4GdO(BO3)3 (Yb:GdCOB) laser,�?? IEEE J. Quantum Electron. 36, 598-606 (2000).
[CrossRef]

F. Balembois, F. Falcoz, F. Kerboull, F. Druon, P. Georges, A. Brun, �??Theoretical and experimental investigations of small-signal gain for a diode-pumped q-switched Cr:LiSAF Laser,�?? IEEE J. Quantum Electron. 33, 269-278, (1997).
[CrossRef]

IEEE Photon. Technol. Lett.

E. Schielen, M. Golling, P. Unger, �??Diode-pumped semiconductor disk laser with intracavity frequency doubling using lithium triborate (LBO),�?? IEEE Photon. Technol. Lett. 14, 777-779 (2002).
[CrossRef]

J. Appl. Opt.

H. Hellwig, J. Liebertz and L. Bohaty, �??Linear optical properties of the monoclinic bismuth borate BiB3O6,�?? J. Appl. Opt. 88, 240-244 (2000).

Laser Focus World

L. Marshall, �??Many variant lasers compete in the blue,�?? Laser Focus World, October, 79-83 (2004).

Opt. Commun.

P. Li, D. Li, C. Li, Z. Zhang, �??Simultaneous dual-wavelength continuous wave laser operation at 1.06 µm and 946 nm in Nd:YAG and their frequency doubling,�?? Opt. Commun. 235, 169-174 (2004).
[CrossRef]

Opt. Lett.

OSA proceedings series

M. Schmidt, E. Heumann, C. Czeranowsky, G. Huber, �??Continuous wave diode pumped Nd:GdVO4 laser at 912 nm and intracavity doubling to the blue spectral range,�?? in Advanced Solid-State Lasers, Christopher Marshall eds., Vol. 50 of OSA proceedings series (Optical Society of America, Washington, D.C., 2001), pp. 470-475.

Proc. SPIE

J. Chilla, S. Butterworth, A. Zeitschel, J. Charles, A. Caprara, M. Reed, L. Spinelli, �??High power optically pumped semiconductor lasers,�?? in Nanobiophotonics and Biomedical Applications, Proc. SPIE, 5332, 143-150 (2004).
[CrossRef]

Technical Digest of Conference on Lasers

H.M. Kretschmann, G. Huber, �??A discretely tunable continuous wave doubly resonant intracavity sum frequency mixer at 549 nm, 598 nm, 602 nm and 618 nm: output performance and noise characterization,�?? in Technical Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Baltimore, Maryland, 1999), pp. 226.

Other

W.P. Risk, T.R. Gosnell and A.V. Nurmikko, Compact Blue-Green Lasers, (Cambridge University Press, 2003).
[CrossRef]

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Figures (7)

Fig. 1.
Fig. 1.

Experimental setup of the dual-wavelength laser with a single crystal of Nd:GdVO4. M1: HT@808 nm, HR@912 nm, RoC=50 mm, R= 77%@1063 nm, M2: HR@912 nm + 1063

Fig. 2.
Fig. 2.

Influence of the waist size of the laser at 1063 nm in the Nd:GdVO4 crystal on the gain competition (a) Evolution of the intracavity intensity of the 912 nm radiations versus the intracavity intensity of the 1063 nm radiations - (b) Product of the two intracavity intensities in the non-linear crystal).

Fig. 3.
Fig. 3.

(a) Evolution of the intracavity intensity of the 912 nm radiations versus the intracavity intensity of the 1063 nm radiations -(b) Product of the two intracavity intensities in the non linear-crystal.

Fig. 4.
Fig. 4.

Experimental setup of the dual-wavelength laser in two laser crystals (Nd:GdVO4 and Nd:YLF). M1: HT@808 nm, HR@1047 nm, RoC=50 mm, M2: HR@912 nm, HT@808 nm +

Fig. 5.
Fig. 5.

Experimental setup of the dual-wavelength laser in two laser crystals (Nd:GdVO4 and Nd:YVO4). M1: HT@808 nm, HR@912 nm, RoC=50 mm, M2: HR@912 nm, HT@808 nm, M3: HR@912 nm, RoC=200 mm, M4: HR@912 nm, T=96 %@1064 nm, T=52%@491 nm, M5: HR@912 nm+1064 nm, T=77%@491 nm, M6: HR@1064 nm, RoC=500 mm, M7: HR@1064 nm, M8: HR@1064 nm, T=85%@491 nm, RoC=350 mm.

Fig. 6.
Fig. 6.

Intracavity power at 912 nm and 1064 nm versus pump power at 808 nm.

Fig. 7.
Fig. 7.

Total output power and total produced power (see text) at 491 nm versus pump power at

Tables (1)

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Table 1. Comparison between different Nd-doped crystals emitting around 900 nm.

Equations (9)

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g 1063 = σ 1063 f b N 2
g 912 = σ 912 f b N 2 σ 912 f a N 1
g 912 g 1063 = σ 912 σ 1063 ( 1 f a f b N 1 N 2 )
dN 1 dt = σ p I p N 1 σ 912 I 912 f a N 1 + AN 1 + σ 1063 I 1063 f b N 2 + σ 912 I 912 f b N 2
N 1 = N A + σ 912 I 912 f b + σ 1063 I 1063 f b A + σ 912 I 912 ( f b + f a ) + σ 1063 I 1063 f b + σ p I p
I 912 = ( g 912 g 1063 ) 1 I 1063 + K
g 912 = N σ p I p f b σ 912 A f a σ 912 σ 1063 I 1063 f b f a σ 912 A + σ 912 I 912 ( f b + f a ) + σ 1063 I 1063 f b + σ p I p
G = [ 1 + 0 1 dz 0 r c 4 g ( r , s ) w c 2 ( r , s ) exp ( 2 r 2 w c 2 ( r , z ) ) rdr ] 2
G = 1 1 T out L

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