Abstract

We describe an effective external cavity for narrowing the spectral linewidth of a multiarray stack of laser diode arrays. For a commercially available 279-W free-running five-array laser diode array operating at 60A, we narrow the spectral linewidth to 0.40nm at FWHM with 115W of cw power output. This technique leads to the possibility of higher-efficiency, lower-cost production of hyperpolarized noble gases for magnetic resonance imaging.

© 2005 Optical Society of America

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References

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  1. F. W. Hersman, presented at the 2004 International Workshop on Pulmonary Functional Imaging at Penn, Philadelphia, Pa., November 12–14, 2004.
  2. T. G. Walker and W. Happer, Rev. Mod. Phys. 69, 629 (1997).
    [CrossRef]
  3. B. Chann, I. Nelson, and T. G. Walker, Opt. Lett. 25, 1352 (2000).
    [CrossRef]
  4. Nuvonyx PA-332 Reference Mannual, Nuvonyx Inc., Bridgeton, Mo., 2003.
  5. D. Botez and D. Scifres, eds., Diode Laser Arrays (Cambridge U. Press, Cambridge, England, 1994).
    [CrossRef]
  6. E. G. Loewen, M. Neviere, and D. Maystre, Appl. Opt. 16, 2711 (1977).
    [CrossRef] [PubMed]
  7. B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
    [CrossRef]

2002 (1)

B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
[CrossRef]

2000 (1)

1997 (1)

T. G. Walker and W. Happer, Rev. Mod. Phys. 69, 629 (1997).
[CrossRef]

1977 (1)

Anderson, L. W.

B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
[CrossRef]

Babcock, E.

B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
[CrossRef]

Chann, B.

B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
[CrossRef]

B. Chann, I. Nelson, and T. G. Walker, Opt. Lett. 25, 1352 (2000).
[CrossRef]

Happer, W.

T. G. Walker and W. Happer, Rev. Mod. Phys. 69, 629 (1997).
[CrossRef]

Hersman, F. W.

F. W. Hersman, presented at the 2004 International Workshop on Pulmonary Functional Imaging at Penn, Philadelphia, Pa., November 12–14, 2004.

Loewen, E. G.

Maystre, D.

Nelson, I.

Neviere, M.

Walker, T. G.

B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
[CrossRef]

B. Chann, I. Nelson, and T. G. Walker, Opt. Lett. 25, 1352 (2000).
[CrossRef]

T. G. Walker and W. Happer, Rev. Mod. Phys. 69, 629 (1997).
[CrossRef]

Appl. Opt. (1)

Opt. Lett. (1)

Phys. Rev. A (1)

B. Chann, E. Babcock, L. W. Anderson, and T. G. Walker, Phys. Rev. A 66, 033406 (2002).
[CrossRef]

Rev. Mod. Phys. (1)

T. G. Walker and W. Happer, Rev. Mod. Phys. 69, 629 (1997).
[CrossRef]

Other (3)

Nuvonyx PA-332 Reference Mannual, Nuvonyx Inc., Bridgeton, Mo., 2003.

D. Botez and D. Scifres, eds., Diode Laser Arrays (Cambridge U. Press, Cambridge, England, 1994).
[CrossRef]

F. W. Hersman, presented at the 2004 International Workshop on Pulmonary Functional Imaging at Penn, Philadelphia, Pa., November 12–14, 2004.

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Figures (5)

Fig. 1
Fig. 1

Schematic of the LDA stack external-cavity arrangement with selected rays.

Fig. 2
Fig. 2

Comparison between free-running and spectrally narrowed LDA stack external-cavity laser linewidths.

Fig. 3
Fig. 3

Spectral linewidth for each LDA and all five LDAs combined.

Fig. 4
Fig. 4

Photograph showing smiles of PA-332 LDA stack arrays 1–5, left to right, on a 0.5 - cm grid graph paper.

Fig. 5
Fig. 5

External-cavity tuning range and the spectral power of the narrowed laser beam.

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