Abstract

We demonstrate up to 1.6 Watts of single frequency output from a tapered diode laser operating at 785 nm. The tapered diode laser is used in a rear end external cavity set-up where the external feedback element is a combination of a BaTiO3 phase-conjugating crystal and a high reflection mirror. The set-up presented inherently suppresses the self-wavelength scanning effect, which is well known when employing a phase-conjugating crystal as a dynamic wavelength selection component in a laser cavity. The experimental results have been discussed theoretically in some details by employing a two-beam coupling model.

© 2005 Optical Society of America

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References

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    [CrossRef] [PubMed]
  2. S. J. Jensen, M. Løbel, and Paul M. Petersen, "Stability of the sibgle-mode output of a laser diode array with phase conjugate feedback," Appl. Phys. Lett., 76, 535-537 (2000).
    [CrossRef]
  3. S. Weiss, M. Segev, and B. Fisher, "Line narrowing and self frequency scanning of laser diode arrays coupled to a photorefractive oscillator," IEEE J. Quantum Electron. 24, 706-708 (1988).
    [CrossRef]
  4. G.W. Ross, P. Hribrik, R.W. Eason, M.H. Garrett and D. Rytz, "Impurity enhanged self-pumped phase conjugation in the near infrared in "blue" BaTiO3," Opt. Comm. 101, 60-64 (1993).
    [CrossRef]
  5. Y. Zhu, D. Zhang, X. Niu, and X. Wu, "High efficiency self-pumped phase conjugation from 45°-cut Ce:BaTiO3," Opt. Commun. 134, 205-210 (1997).
    [CrossRef]
  6. N. Hout, J.M.C. Jonathan, G. Roosen, and D. Rytz, "Characterization and optimization of a ring self-pumped phase-conjugate mirror at 1.06 μm with BaTiO3:Rh," J. Opt. Am. B, 15 (1998).
  7. M. Løbel, P.M. Petersen, and P.M. Johansen, "Suppressing self-induced frequency scanning of a phase conjugate diode laser array with using counterbalance dispersion," Appl. Phys. Lett. 72, 1263-1265 (1998).
    [CrossRef]
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  9. L. Meilhac, N. Dubreuil, G. Pauliat, and G. Roosen, "Modeling of laser mode self-adapted filtering by photorefractive Fabry-Perot interferometers," Opt. Mat. 18, 37-40 (2001).
    [CrossRef]
  10. A. Shiratori, and M. Obara, "Wavelength-stable, narrow-spectral-width oscillation of an AlGaInP diode laser coupled to a BaTiO3:Co stimulated photorefractive backscattering phase conjugator," Appl. Phys. B, 15, 329-333 (1997).
    [CrossRef]
  11. N. Hout, J.M. Jonathan, G. Pauliat, P. Georges, and G. Roosen, "Laser mode minipulation by intracavity dynamic holography: Application to mode selection," Appl. Phys. B 69, 155-157 (1999).
    [CrossRef]
  12. A. Godard, G. Pauliat, G. Roosen, P. Graindorge, and P. Martin, "Relaxation of the aligment tolerance of a 1.55 μm extended-cavity semiconductor laser by use of an intracavity photorefractive filter," Opt. Lett. 26, 1955-1957 (2001).
    [CrossRef]
  13. A. Godard, G. Pauliat, G. Roosen, P. Graindorge, and P. Martin, "Single-mode gain in grating-tuned extended-cavity semiconductor lasers: Investigation of stable single-mode opration conditions," IEEE J. Quantum Electron. 38, NO. 4, (2002).
  14. Pochi Yeh, Introduction to Photorefractive Nonlinear Optics, (John Wiley & Sons Inc., 1993).

Appl. Phys. B (2)

A. Shiratori, and M. Obara, "Wavelength-stable, narrow-spectral-width oscillation of an AlGaInP diode laser coupled to a BaTiO3:Co stimulated photorefractive backscattering phase conjugator," Appl. Phys. B, 15, 329-333 (1997).
[CrossRef]

N. Hout, J.M. Jonathan, G. Pauliat, P. Georges, and G. Roosen, "Laser mode minipulation by intracavity dynamic holography: Application to mode selection," Appl. Phys. B 69, 155-157 (1999).
[CrossRef]

Appl. Phys. Lett. (2)

S. J. Jensen, M. Løbel, and Paul M. Petersen, "Stability of the sibgle-mode output of a laser diode array with phase conjugate feedback," Appl. Phys. Lett., 76, 535-537 (2000).
[CrossRef]

M. Løbel, P.M. Petersen, and P.M. Johansen, "Suppressing self-induced frequency scanning of a phase conjugate diode laser array with using counterbalance dispersion," Appl. Phys. Lett. 72, 1263-1265 (1998).
[CrossRef]

IEEE J. Quantum Electron. (2)

S. Weiss, M. Segev, and B. Fisher, "Line narrowing and self frequency scanning of laser diode arrays coupled to a photorefractive oscillator," IEEE J. Quantum Electron. 24, 706-708 (1988).
[CrossRef]

A. Godard, G. Pauliat, G. Roosen, P. Graindorge, and P. Martin, "Single-mode gain in grating-tuned extended-cavity semiconductor lasers: Investigation of stable single-mode opration conditions," IEEE J. Quantum Electron. 38, NO. 4, (2002).

J. Opt. Am. B (1)

N. Hout, J.M.C. Jonathan, G. Roosen, and D. Rytz, "Characterization and optimization of a ring self-pumped phase-conjugate mirror at 1.06 μm with BaTiO3:Rh," J. Opt. Am. B, 15 (1998).

Opt. Comm. (1)

G.W. Ross, P. Hribrik, R.W. Eason, M.H. Garrett and D. Rytz, "Impurity enhanged self-pumped phase conjugation in the near infrared in "blue" BaTiO3," Opt. Comm. 101, 60-64 (1993).
[CrossRef]

Opt. Commun. (1)

Y. Zhu, D. Zhang, X. Niu, and X. Wu, "High efficiency self-pumped phase conjugation from 45°-cut Ce:BaTiO3," Opt. Commun. 134, 205-210 (1997).
[CrossRef]

Opt. Lett. (3)

Opt. Mat. (1)

L. Meilhac, N. Dubreuil, G. Pauliat, and G. Roosen, "Modeling of laser mode self-adapted filtering by photorefractive Fabry-Perot interferometers," Opt. Mat. 18, 37-40 (2001).
[CrossRef]

Other (1)

Pochi Yeh, Introduction to Photorefractive Nonlinear Optics, (John Wiley & Sons Inc., 1993).

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Figures (6)

Fig. 1.
Fig. 1.

Schematic of the optical set-up with the tapered laser diode.

Fig. 2.
Fig. 2.

The slope-efficiency of the diode laser set-up with and without the phase-conjugating crystal.

Fig. 3.
Fig. 3.

Spectrum of the optical output from the 785 nm diode laser set-up with the combined phase-conjugating crystal/mirror external cavity feedback.

Fig. 4.
Fig. 4.

Drift of the laser wavelength as function of time. No self-scanning is observed.

Fig. 5.
Fig. 5.

Definition of the normalized crystal thickness.

Fig. 6.
Fig. 6.

The normalized intensities as found from the computer calculations.

Equations (2)

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d I 1 d z = α n I 1 2 Γ n I 1 I 2 I 1 + I 2
d I 2 d z = + α n I 2 2 Γ n I 1 I 2 I 1 + I 2 ,

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