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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 10 — Oct. 1, 2011
  • pp: 2358–2361

Measurement of upconversion in Er:YAG via z-scan

Jeffrey O. White and Carl E. Mungan  »View Author Affiliations


JOSA B, Vol. 28, Issue 10, pp. 2358-2361 (2011)
http://dx.doi.org/10.1364/JOSAB.28.002358


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Abstract

We demonstrate the use of the z-scan technique for measuring the upconversion coefficient in Er:YAG. The upconversion coefficient is found to be linearly proportional to the concentration for samples of concentration 0.5 3.0   at.% . A fit to four samples at room temperature yields a value of C up = ( 2.0 ± 0.5 ) × 10 17 cm 3 / s / at.% . The coefficient at liquid-nitrogen temperatures is C up = ( 9.5 ± 2.4 ) × 10 17 cm 3 / s / at.% .

© 2011 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(190.7220) Nonlinear optics : Upconversion
(300.6460) Spectroscopy : Spectroscopy, saturation

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 8, 2011
Manuscript Accepted: August 2, 2011
Published: September 6, 2011

Citation
Jeffrey O. White and Carl E. Mungan, "Measurement of upconversion in Er:YAG via z-scan," J. Opt. Soc. Am. B 28, 2358-2361 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-10-2358


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References

  1. J. O. White, M. Dubinskii, L. D. Merkle, I. Kudryashov, and D. Garbuzov, “Resonant pumping and upconversion in 1.6 μmEr3+ lasers,” J. Opt. Soc. Am. B 24, 2454-2460 (2007). [CrossRef]
  2. J. O. White, “Parameters for quantitative comparison of two-, three-, and four-level laser media, operating wavelengths, and temperatures,” IEEE J. Quantum Electron. 45, 1213-1220(2009). [CrossRef]
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  10. This value was calculated as σ=α0/Nfa, where fa=0.300, for a sample of concentration N=6.80×1019 cm−3. The unsaturated absorption coefficient was measured at 80 K to be α0=50.6 cm−1.
  11. D. K. Sardar, C. C. Russell III, J. B. Gruber, and T. H. Allik, “Absorption intensities and emission cross sections of principal intermanifold and inter-Stark transitions of Er3+(4f11) in polycrystalline ceramic garnet Y3Al5O12,” J. Appl. Phys. 97, 123501 (2005). [CrossRef]
  12. D. K. Sardar, W. M. Bradley, J. J. Perez, J. B. Gruber, B. Zandi, J. A. Hutchinson, C. W. Trussell, and M. R. Kokta, “Judd-Ofelt analysis of the Er3+(4f11)) absorption intensities in Er3+-doped garnets,” J. Appl. Phys. 93, 2602-2607(2003). [CrossRef]

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