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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5466–5472

Optical cooling in Er3+:KPb2Cl5

Nicholas J. Condon, Steven R. Bowman, Shawn P. O’Connor, Richard S. Quimby, and Carl E. Mungan  »View Author Affiliations

Optics Express, Vol. 17, Issue 7, pp. 5466-5472 (2009)

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For the first time, optical cooling has been observed in the 4I13/2 excited state of erbium(III), using the low phonon energy host materal, potassium lead chloride (KPb2Cl5). Cooling was observed when samples were pumped at wavelengths longer than 1557 nm, 17 nm longer than the mean fluorescence wavelength of 1540 nm, which implies a nonradiative heat load of 1.1% for the 4I13/24I15/2 transition. When pumped at 1568 nm, the total cooling efficiency was 0.38% of the absorbed power. These results highlight the potential of Er3+:KPb2Cl5 as a material for lasers operating in an eye safe spectral region.

© 2009 Optical Society of America

OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(140.3500) Lasers and laser optics : Lasers, erbium
(160.3380) Materials : Laser materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:

Original Manuscript: October 31, 2008
Revised Manuscript: February 27, 2009
Manuscript Accepted: March 2, 2009
Published: March 23, 2009

Nicholas J. Condon, Steven R. Bowman, Shawn P. O'Connor, Richard S. Quimby, and Carl E. Mungan, "Optical cooling in Er3+:KPb2Cl5," Opt. Express 17, 5466-5472 (2009)

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  1. P. Pringsheim, "Zwei Bemerkungen über den Unterschied von Lumineszenz- und Temperaturstrahlung.," Z. Phys. 57, 739-746 (1929). [CrossRef]
  2. N. Djeu and W. T. Whitney, "Laser cooling by spontaneous anti-Stokes scattering," Phys. Rev. Lett. 46, 236-239 (1981). [CrossRef]
  3. R. I. Epstein, M. I. Buchwald, B. C. Edwards, T. R. Gosnell, and C..E. Mungan, "Observation of laser-induced fluorescent cooling of a solid," Nature 377, 500-503 (1995). [CrossRef]
  4. C. W. Hoyt, M. Sheik-Bahae, R. I. Epstein, B. C. Edwards, and J. E. Anderson, "Observation of Anti-Stokes Fluorescence Cooling in Thulium-Doped Glass," Phys. Rev. Lett. 85, 3600-3603 (2000). [CrossRef] [PubMed]
  5. S. R. Bowman and C. E. Mungan, "New materials for optical cooling," Appl. Phys. B 71, 807-811 (2000).
  6. R. I. Epstein, J. J. Brown, B. C. Edwards, and A. Gibbs, "Measurements of optical refrigeration in ytterbium-doped crystals," J. Appl. Phys. 90, 4815-4819 (2001) [CrossRef]
  7. C. E. Mungan, M. I. Buchwald, and G. L. Mills, "All-Solid-State Optical Coolers: History, Status, and Potential," in Cryocoolers 14, S.D. Miller and R.G. Ross, Jr, eds. (International Cryocooler Conference, Inc., 2007) 539-548.
  8. S. R. Bowman, "Lasers Without Internal Heat Generation," IEEE J. Quantum Electron. 35, 115-122 (1999). [CrossRef]
  9. S. R. Bowman, S. P. O’Connor, and S. Biswal, "Ytterbium Laser With Reduced Thermal Loading," IEEE J. Quantum Electron. 41, 1510-1517 (2005). [CrossRef]
  10. D. Garbuzov, I. Kudryashov, and M. Dubinskii, "110 W (0.9 J) pulsed power from resonantly diode-laser-pumped 1.6-μm Er:YAG laser," Appl. Phys. Lett. 87, 121101 (2005). [CrossRef]
  11. D. Y. Shen, J. K. Sahu, and W. A. Clarkson, "Highly efficient in-band pumped Er:YAG laser with 60 W of output at 1645 nm," Opt. Lett. 31, 754-756 (2006). [CrossRef] [PubMed]
  12. K. Spariosu, V. Levya, R. A. Reeder, and M. J. Klotz, "Efficient Er:YAG Laser Operating at 1645 and 1617 nm," IEEE J. Quantum Electron. 42, 182-186 (2006). [CrossRef]
  13. J. O. White, M. Dubinskii, L. D. Merkle, I. Kudryashov, and D. Garbuzov, "Resonant pumping and upconversion in 1.6 μm Er3+ lasers," J. Opt. Soc. Am. B 24, 2454-2460 (2007). [CrossRef]
  14. N. J. Condon, S. O’Connor, and S. R. Bowman; "Growth and characterization of single-crystal Er3+:KPb2Cl5 as a mid-infrared laser material," J. Crys. Growth 291, 472-478 (2006). [CrossRef]
  15. S. R. Bowman, S. K. Searles, N. W. Jenkins, S. B. Qadri, E. F. Skelton, and J. Ganem, "New mid-IR laser based on an erbium activated low phonon energy crystal," presented at the Conference on Lasers and Electro-Optics, Baltimore, MD, 11 May 2001.
  16. J. Fernandez, A. J. Garcia-Adeva, and R. Balda, "Anti-Stokes Laser Cooling in Bulk Erbium-Doped Materials," Phys. Rev. Lett. 97, 033001 (2006). [CrossRef] [PubMed]
  17. R. S. Quimby, N. J. Condon, S. P. O’Connor, S. Biswal, and S. R. Bowman, "Upconversion and excited-state absorption in the lower levels of Er:KPb2Cl5," Opt. Mater. 30, 827-834 (2008). [CrossRef]
  18. O. L. Antipov, D. V. Bredikhin, O. N. Eremeykin, A. P. Savikin, E. V. Ivankin, and A. V. Sukhadolau, "Electronic mechanism for refractive-index changes in intensively pumped Yb:YAG laser crystals," Opt. Lett. 31, 763-765 (2006). [CrossRef] [PubMed]
  19. S. Biswal, S. P. O’Connor, and S. R. Bowman, "Nonradiative losses in Yb:KGd(WO4)2 and Yb:Y3Al5O12," App. Phys. Lett. 89, 091911 (2006). [CrossRef]
  20. N. W. Jenkins, S. R. Bowman, S. O’Connor, S. K. Searles, and J. Ganem, "Spectroscopic characterization of Er-doped KPb2Cl5, laser crystals," Optical Materials 22, 311-320 (2003). [CrossRef]
  21. C. E. Mungan and T. R. Gosnell, "Laser cooling of solids," Adv. At. Mol. Opt. Phys. 40, 161-228 (1999).

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