Abstract

Rubidium titanyl arsenate (RTA), a crystallographic isomorph of potassium titanyl phosphate, shows promise for nonlinear-frequency generation throughout the 1–5-µm spectral region. Difference-frequency generation in an RTA crystal produced tunable output in the 3.2–4.2-µm wavelength range. A single 1.064-µm Nd:YAG laser pumped both a LiNbO3 optical parametric oscillator used to generate a tunable signal beam and the RTA crystal used for difference-frequency generation. Conversion efficiencies were limited to 4% primarily by the large beam divergence of the signal beam. Phase-matching measurements were in excellent agreement with new IR-corrected RTA Sellmeier equations based on refractive-index measurements.

© 1996 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. G. Loiacono, Crystal Associates, Inc., Waldwick, N.J. 07463 (personal communication).
  2. Q. Chen and W. P. Risk, “Periodically poled KTiOPO4: a new nonlinear material for bulk interactions,” in Advanced Solid-State Lasers, B. H. T. Chai and S. A. Payne, eds., Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C.1995), pp. 45–48.
  3. L. K. Cheng, J. D. Bierlein, and A. A. Ballman, “Crystal growth of KTiOPO4 isomorphs from tungstate and molybdate fluxes,” J. Cryst. Growth 110, 697–703 (1991).
    [CrossRef]
  4. L. T. Cheng, L. K. Cheng, and J. D. Bierlein, “Linear and nonlinear optical properties of the arsenate isomorphs of KTP,” Proc. SPIE 1863, 43–53 (1993).
    [CrossRef]
  5. D. L. Fenimore, K. L. Schepler, U. B. Ramabadran, and S. R. McPherson, “Infrared corrected Sellmeier coefficients for potassium titanyl arsenate,” J. Opt. Soc. Am. B 12, 794–796 (1995).
    [CrossRef]
  6. B. Boulanger and G. Marnier, “Field factor calculation of the study of the relationships between all the 3-wave nonlinear optical interactions in uniaxial and biaxial crystals,” J. Phys. Condens. Matter 3, 8327–8350 (1991).
    [CrossRef]
  7. S. K. Wong, G. Fournier, P. Mathieu, and P. Pace, “High-power solid-state 4-µm laser based on Nd:YAG technology and difference-frequency generation,” J. Opt. Soc. Am. B 9, 58–64 (1992).
    [CrossRef]
  8. S. K. Wong, R. Oliver, K. L. Schepler, and D. L. Fenimore, “Difference-frequency generation of 4-µm radiation from Nd:YAG lasers,” Opt. Lett. 19, 1433–1435 (1994).
    [CrossRef] [PubMed]

1995 (1)

1994 (1)

1993 (1)

L. T. Cheng, L. K. Cheng, and J. D. Bierlein, “Linear and nonlinear optical properties of the arsenate isomorphs of KTP,” Proc. SPIE 1863, 43–53 (1993).
[CrossRef]

1992 (1)

1991 (2)

L. K. Cheng, J. D. Bierlein, and A. A. Ballman, “Crystal growth of KTiOPO4 isomorphs from tungstate and molybdate fluxes,” J. Cryst. Growth 110, 697–703 (1991).
[CrossRef]

B. Boulanger and G. Marnier, “Field factor calculation of the study of the relationships between all the 3-wave nonlinear optical interactions in uniaxial and biaxial crystals,” J. Phys. Condens. Matter 3, 8327–8350 (1991).
[CrossRef]

Ballman, A. A.

L. K. Cheng, J. D. Bierlein, and A. A. Ballman, “Crystal growth of KTiOPO4 isomorphs from tungstate and molybdate fluxes,” J. Cryst. Growth 110, 697–703 (1991).
[CrossRef]

Bierlein, J. D.

L. T. Cheng, L. K. Cheng, and J. D. Bierlein, “Linear and nonlinear optical properties of the arsenate isomorphs of KTP,” Proc. SPIE 1863, 43–53 (1993).
[CrossRef]

L. K. Cheng, J. D. Bierlein, and A. A. Ballman, “Crystal growth of KTiOPO4 isomorphs from tungstate and molybdate fluxes,” J. Cryst. Growth 110, 697–703 (1991).
[CrossRef]

Boulanger, B.

B. Boulanger and G. Marnier, “Field factor calculation of the study of the relationships between all the 3-wave nonlinear optical interactions in uniaxial and biaxial crystals,” J. Phys. Condens. Matter 3, 8327–8350 (1991).
[CrossRef]

Chen, Q.

Q. Chen and W. P. Risk, “Periodically poled KTiOPO4: a new nonlinear material for bulk interactions,” in Advanced Solid-State Lasers, B. H. T. Chai and S. A. Payne, eds., Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C.1995), pp. 45–48.

Cheng, L. K.

L. T. Cheng, L. K. Cheng, and J. D. Bierlein, “Linear and nonlinear optical properties of the arsenate isomorphs of KTP,” Proc. SPIE 1863, 43–53 (1993).
[CrossRef]

L. K. Cheng, J. D. Bierlein, and A. A. Ballman, “Crystal growth of KTiOPO4 isomorphs from tungstate and molybdate fluxes,” J. Cryst. Growth 110, 697–703 (1991).
[CrossRef]

Cheng, L. T.

L. T. Cheng, L. K. Cheng, and J. D. Bierlein, “Linear and nonlinear optical properties of the arsenate isomorphs of KTP,” Proc. SPIE 1863, 43–53 (1993).
[CrossRef]

Fenimore, D. L.

Fournier, G.

Loiacono, G.

G. Loiacono, Crystal Associates, Inc., Waldwick, N.J. 07463 (personal communication).

Marnier, G.

B. Boulanger and G. Marnier, “Field factor calculation of the study of the relationships between all the 3-wave nonlinear optical interactions in uniaxial and biaxial crystals,” J. Phys. Condens. Matter 3, 8327–8350 (1991).
[CrossRef]

Mathieu, P.

McPherson, S. R.

Oliver, R.

Pace, P.

Ramabadran, U. B.

Risk, W. P.

Q. Chen and W. P. Risk, “Periodically poled KTiOPO4: a new nonlinear material for bulk interactions,” in Advanced Solid-State Lasers, B. H. T. Chai and S. A. Payne, eds., Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C.1995), pp. 45–48.

Schepler, K. L.

Wong, S. K.

J. Cryst. Growth (1)

L. K. Cheng, J. D. Bierlein, and A. A. Ballman, “Crystal growth of KTiOPO4 isomorphs from tungstate and molybdate fluxes,” J. Cryst. Growth 110, 697–703 (1991).
[CrossRef]

J. Opt. Soc. Am. B (2)

J. Phys. Condens. Matter (1)

B. Boulanger and G. Marnier, “Field factor calculation of the study of the relationships between all the 3-wave nonlinear optical interactions in uniaxial and biaxial crystals,” J. Phys. Condens. Matter 3, 8327–8350 (1991).
[CrossRef]

Opt. Lett. (1)

Proc. SPIE (1)

L. T. Cheng, L. K. Cheng, and J. D. Bierlein, “Linear and nonlinear optical properties of the arsenate isomorphs of KTP,” Proc. SPIE 1863, 43–53 (1993).
[CrossRef]

Other (2)

G. Loiacono, Crystal Associates, Inc., Waldwick, N.J. 07463 (personal communication).

Q. Chen and W. P. Risk, “Periodically poled KTiOPO4: a new nonlinear material for bulk interactions,” in Advanced Solid-State Lasers, B. H. T. Chai and S. A. Payne, eds., Vol. 24 of OSA Proceedings Series (Optical Society of America, Washington, D.C.1995), pp. 45–48.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)

Fig. 1
Fig. 1

Infrared transmission of uncoated KTP and RTA crystals.

Fig. 2
Fig. 2

Experimental setup for tunable difference-frequency generation in RTA.

Fig. 3
Fig. 3

RTA refractive indices. Measured values: (▲) x axis, (▼) y axis, and (●) z axis. Solid curves are least-square fits of Sellmeier equations to the measured indices.

Fig. 4
Fig. 4

Measured and calculated phase matching for difference-frequency generation in RTA: (♦) three different measurement runs; (—) Sellmeier equations reported in this study; (— —) Cheng et al.4 Sellmeier equations.

Fig. 5
Fig. 5

Pump-pulse temporal profile for DFG depleted and undepleted cases; the difference between the two is shown in the bottom plot.

Fig. 6
Fig. 6

DFG signal-pulse temporal profile for amplified (large) and unamplified (smaller) cases.

Fig. 7
Fig. 7

Model calculations of idler energy for a 10-mm-long RTA DFG crystal and optimum RTA crystal length versus phase mismatch (Δk).

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

nxλ=2.04207+1.177851-0.20157λ2-0.01035λ21/2,
nyλ=2.14941+1.092671-0.21462λ2-0.01067λ21/2,
nzλ=2.18962+1.301031-0.22809λ2-0.01390λ21/2.
PiPp=23π2deff2L2Psocninsnpλi2Asinc2(|Δk|L/2)
sin(|Δk|Lopt/2)cos(|Δk|Lopt/2)=0.

Metrics