Abstract

We demonstrate improved signal and idler-beam quality of a 3-mm-aperture quasi-phase-matched RbTiOAsO4 optical parametric oscillator through use of a confocal unstable resonator as compared with a plane-parallel resonator. Both oscillators were singly resonant, and the periodically poled RbTiOAsO4 crystal generated a signal at 1.56 µm and an idler at 3.33 µm when pumped at 1.064 µm. We compared the beam quality produced by the 1.2-magnification confocal unstable resonator with the beam quality produced by the plane-parallel resonator by measuring the signal and the idler beam M 2 value. We also investigated the effect of pump-beam intensity distribution by comparing the result of a Gaussian and a top-hat intensity profile pump beam. We generated a signal beam of M 2 ≈ 7 and an idler beam of M 2 ≈ 2.5 through use of an unstable resonator and a Gaussian intensity profile pump beam. This corresponds to an increase of a factor of approximately 2 in beam quality for the signal and a factor of 3 for the idler, compared with the beam quality of the plane-parallel resonator optical parametric oscillator.

© 2001 Optical Society of America

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References

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  1. A. E. Siegman, Lasers (University Science Books, Mill Valley, Calif., 1986), pp. 858–913.
  2. W. A. Neuman, S. P. Velsko, “Effect of cavity design on optical parametric oscillator performance,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonic Series (Optical Society of America, Washington, D.C., 1996), pp. 179–181.
  3. M. K. Brown, M. S. Bowers, “High-energy, near-diffraction-limited output from optical parametric oscillators using unstable resonators,” in Solid State Lasers VI, R. Scheps, ed., Proc. SPIE2986, 113–122 (1997).
    [CrossRef]
  4. J. N. Farmer, M. S. Bowers, W. S. Scharpf, “High brightness eyesafe optical parametric oscillator using confocal unstable resonators,” in Advanced Solid-State Lasers, M. M. Feyer, H. Injeyan, U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1999), pp. 567–571.
  5. S. Chandra, T. H. Allik, J. A. Hutchinson, M. S. Bowers, “Improved OPO brightness with a GRM non-confocal unstable resonator,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), pp. 177–178.
  6. B. C. Johnson, V. J. Newell, J. B. Clark, E. S. McPhee, “Narrow-bandwidth low-divergence optical parametric oscillator for nonlinear frequency-conversion applications,” J. Opt. Soc. Am. B 12, 2122–2127 (1995).
    [CrossRef]
  7. M. Missey, V. Dominic, P. Powers, K. L. Schepler, “Aperture scaling effects with monolithic periodically poled lithium niobate optical parametric oscillators and generators,” Opt. Lett. 25, 248–250 (2000).
    [CrossRef]
  8. M. J. Missey, V. Dominic, L. E. Myers, R. C. Eckardt, “Diffusion-bonded stacks of periodically poled lithium niobate,” Opt. Lett. 23, 664–666 (1998).
    [CrossRef]
  9. J. Hellström, V. Pasiskevicius, H. Karlsson, F. Laurell, “High-power optical parametric oscillation in large-aperture periodically poled KTiOPO4,” Opt. Lett. 25, 174–176 (2000).
    [CrossRef]
  10. H. Karlsson, M. Olson, G. Arvidsson, F. Laurell, U. Bäder, A. Borsutzky, R. Wallenstein, S. Wickström, M. Gustafsson, “Nanosecond optical parametric oscillator based on large-aperture periodically poled RbTiOAsO4,” Opt. Lett. 24, 330–332 (1999).
    [CrossRef]
  11. G. Hansson, H. Karlsson, S. Wang, F. Laurell, “Transmission measurements in KTP and isomorphic compounds,” Appl. Opt. 39, 5058–5069 (2000).
    [CrossRef]
  12. W. F. Krupke, W. R. Sooy, “Properties of an unstable confocal resonator CO2 laser system,” IEEE J. Quantum Electron. QE-5, 575–586 (1969).
    [CrossRef]
  13. T. F. Johnston, “Beam propagation (M2) measurement made as easy as it gets: the four-cuts method,” Appl. Opt. 37, 4840–4850 (1998).
    [CrossRef]

2000

1999

1998

1995

1969

W. F. Krupke, W. R. Sooy, “Properties of an unstable confocal resonator CO2 laser system,” IEEE J. Quantum Electron. QE-5, 575–586 (1969).
[CrossRef]

Allik, T. H.

S. Chandra, T. H. Allik, J. A. Hutchinson, M. S. Bowers, “Improved OPO brightness with a GRM non-confocal unstable resonator,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), pp. 177–178.

Arvidsson, G.

Bäder, U.

Borsutzky, A.

Bowers, M. S.

M. K. Brown, M. S. Bowers, “High-energy, near-diffraction-limited output from optical parametric oscillators using unstable resonators,” in Solid State Lasers VI, R. Scheps, ed., Proc. SPIE2986, 113–122 (1997).
[CrossRef]

S. Chandra, T. H. Allik, J. A. Hutchinson, M. S. Bowers, “Improved OPO brightness with a GRM non-confocal unstable resonator,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), pp. 177–178.

J. N. Farmer, M. S. Bowers, W. S. Scharpf, “High brightness eyesafe optical parametric oscillator using confocal unstable resonators,” in Advanced Solid-State Lasers, M. M. Feyer, H. Injeyan, U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1999), pp. 567–571.

Brown, M. K.

M. K. Brown, M. S. Bowers, “High-energy, near-diffraction-limited output from optical parametric oscillators using unstable resonators,” in Solid State Lasers VI, R. Scheps, ed., Proc. SPIE2986, 113–122 (1997).
[CrossRef]

Chandra, S.

S. Chandra, T. H. Allik, J. A. Hutchinson, M. S. Bowers, “Improved OPO brightness with a GRM non-confocal unstable resonator,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), pp. 177–178.

Clark, J. B.

Dominic, V.

Eckardt, R. C.

Farmer, J. N.

J. N. Farmer, M. S. Bowers, W. S. Scharpf, “High brightness eyesafe optical parametric oscillator using confocal unstable resonators,” in Advanced Solid-State Lasers, M. M. Feyer, H. Injeyan, U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1999), pp. 567–571.

Gustafsson, M.

Hansson, G.

Hellström, J.

Hutchinson, J. A.

S. Chandra, T. H. Allik, J. A. Hutchinson, M. S. Bowers, “Improved OPO brightness with a GRM non-confocal unstable resonator,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), pp. 177–178.

Johnson, B. C.

Johnston, T. F.

Karlsson, H.

Krupke, W. F.

W. F. Krupke, W. R. Sooy, “Properties of an unstable confocal resonator CO2 laser system,” IEEE J. Quantum Electron. QE-5, 575–586 (1969).
[CrossRef]

Laurell, F.

McPhee, E. S.

Missey, M.

Missey, M. J.

Myers, L. E.

Neuman, W. A.

W. A. Neuman, S. P. Velsko, “Effect of cavity design on optical parametric oscillator performance,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonic Series (Optical Society of America, Washington, D.C., 1996), pp. 179–181.

Newell, V. J.

Olson, M.

Pasiskevicius, V.

Powers, P.

Scharpf, W. S.

J. N. Farmer, M. S. Bowers, W. S. Scharpf, “High brightness eyesafe optical parametric oscillator using confocal unstable resonators,” in Advanced Solid-State Lasers, M. M. Feyer, H. Injeyan, U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1999), pp. 567–571.

Schepler, K. L.

Siegman, A. E.

A. E. Siegman, Lasers (University Science Books, Mill Valley, Calif., 1986), pp. 858–913.

Sooy, W. R.

W. F. Krupke, W. R. Sooy, “Properties of an unstable confocal resonator CO2 laser system,” IEEE J. Quantum Electron. QE-5, 575–586 (1969).
[CrossRef]

Velsko, S. P.

W. A. Neuman, S. P. Velsko, “Effect of cavity design on optical parametric oscillator performance,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonic Series (Optical Society of America, Washington, D.C., 1996), pp. 179–181.

Wallenstein, R.

Wang, S.

Wickström, S.

Appl. Opt.

IEEE J. Quantum Electron.

W. F. Krupke, W. R. Sooy, “Properties of an unstable confocal resonator CO2 laser system,” IEEE J. Quantum Electron. QE-5, 575–586 (1969).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Other

A. E. Siegman, Lasers (University Science Books, Mill Valley, Calif., 1986), pp. 858–913.

W. A. Neuman, S. P. Velsko, “Effect of cavity design on optical parametric oscillator performance,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonic Series (Optical Society of America, Washington, D.C., 1996), pp. 179–181.

M. K. Brown, M. S. Bowers, “High-energy, near-diffraction-limited output from optical parametric oscillators using unstable resonators,” in Solid State Lasers VI, R. Scheps, ed., Proc. SPIE2986, 113–122 (1997).
[CrossRef]

J. N. Farmer, M. S. Bowers, W. S. Scharpf, “High brightness eyesafe optical parametric oscillator using confocal unstable resonators,” in Advanced Solid-State Lasers, M. M. Feyer, H. Injeyan, U. Keller, eds., Vol. 26 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1999), pp. 567–571.

S. Chandra, T. H. Allik, J. A. Hutchinson, M. S. Bowers, “Improved OPO brightness with a GRM non-confocal unstable resonator,” in Advanced Solid-State Lasers, S. A. Payne, C. R. Pollock, eds., Vol. 1 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), pp. 177–178.

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Figures (8)

Fig. 1
Fig. 1

Radius of curvature and coating reflectance of the confocal unstable resonator mirrors. The same mirror coatings were used for the plane-parallel resonator. ROC, radius of curvature.

Fig. 2
Fig. 2

Schematic description of the experimental setup.

Fig. 3
Fig. 3

Pump-beam profiles measured at the PP RTA crystal position. The beam positions have been separated for clarity, and the ripple in the measurements was caused by the detector array.

Fig. 4
Fig. 4

Total output power and idler output power dependence of pump power for the plane-parallel resonator when top-hat and Gaussian intensity profiles were used.

Fig. 5
Fig. 5

Total output power and idler output power dependence of pump power for the unstable resonator when top-hat and Gaussian intensity profiles were used.

Fig. 6
Fig. 6

Idler-beam radius data and fitted M 2 = 2.5 beam function for the Gaussian intensity profile pumped unstable resonator in the horizontal direction.

Fig. 7
Fig. 7

Signal and idler far-field beam profiles for the Gaussian intensity profile pumped unstable resonator measured at the focal point of lens L5.

Fig. 8
Fig. 8

Signal and idler far-field beam profiles for the Gaussian intensity profile pumped plane-parallel resonator measured at the focal point of lens L5.

Tables (1)

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Table 1 Beam-Quality M2 Values Achieved with the Described Resonators and Pump Profiles

Equations (1)

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Wz=W01+M2λπW022z-z021/2,

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