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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. 27, Iss. 3 — Mar. 1, 2010
  • pp: 611–618

Measurement of solid-state optical refrigeration by two-band differential luminescence thermometry

W. M. Patterson, D. V. Seletskiy, M. Sheik-Bahae, R. I. Epstein, and M. P. Hehlen  »View Author Affiliations


JOSA B, Vol. 27, Issue 3, pp. 611-618 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000611


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Abstract

We present a non-contact optical technique for the measurement of laser-induced temperature changes in solids. Two-band differential luminescence thermometry (TBDLT) achieves a sensitivity of 7   mK and enables a precise measurement of the net quantum efficiency of optical refrigerator materials. The TBDLT detects internal temperature changes by decoupling surface and bulk heating effects via time-resolved luminescence spectroscopy. Several Yb 3 + -doped fluorozirconate ( ZrF 4 BaF 2 LaF 3 AlF 3 NaF InF 3 , ZBLANI) glasses fabricated from precursors of varying purity and by different processes are analyzed in detail. A net quantum efficiency of ( 97.39 ± 0.01 ) % at 238 K (at a pump wavelength of 1020.5 nm) is found for a ZBLANI:1% Yb 3 + laser-cooling sample produced from metal fluoride precursors that were purified by chelate-assisted solvent extraction and dried in hydrofluoric gas. In comparison, a ZBLANI:1% Yb 3 + sample produced from commercial-grade metal fluoride precursors showed pronounced laser-induced heating that is indicative of a substantially higher impurity concentration. The TBDLT enables rapid and sensitive benchmarking of laser-cooling materials and provides critical feedback to the development and optimization of high-performance optical cryocooler materials.

© 2010 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6430) Spectroscopy : Spectroscopy, photothermal

ToC Category:
Spectroscopy

History
Original Manuscript: October 20, 2009
Revised Manuscript: December 14, 2009
Manuscript Accepted: January 5, 2010
Published: February 26, 2010

Citation
W. M. Patterson, D. V. Seletskiy, M. Sheik-Bahae, R. I. Epstein, and M. P. Hehlen, "Measurement of solid-state optical refrigeration by two-band differential luminescence thermometry," J. Opt. Soc. Am. B 27, 611-618 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-3-611


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References

  1. 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]
  2. M. P. Hehlen, in Optical Refrigeration: Science and Applications of Laser Cooling of Solids, R.I.Epstein and M.Sheik-Bahae, eds. (Wiley, 2009), pp. 33-68.
  3. W. M. Patterson, M. P. Hehlen, R. I. Epstein, and M. Sheik-Bahae, “Synthesis and evaluation of ultra-pure rare-earth-doped glass for laser refrigeration,” Proc. SPIE 7228, 72280C (2008).
  4. D. Seletskiy, M. P. Hasselbeck, M. Sheik-Bahae, R. I. Epstein, S. Bigotta, and M. Tonelli, “Cooling of Yb:YLF using cavity enhanced resonant absorption,” Proc. SPIE 6907, 69070B (2008). [CrossRef]
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  11. D. V. Seletskiy, M. P. Hasselbeck, M. Sheik-Bahae, and R. I. Epstein, “Fast differential luminescence thermometry,” Proc. SPIE 7228, 72280K (2009). [CrossRef]
  12. W. M. Patterson, M. Sheik-Bahae, R. I. Epstein, and M. P. Hehlen, “Model of laser-induced temperature changes in solid-state optical refrigerators,” J. Appl. Phys. (to be published).
  13. M. Sheik-Bahae and R. I. Epstein, “Optical refrigeration,” Nat. Photonics 1, 693-699 (2007). [CrossRef]
  14. M. P. Hehlen, R. I. Epstein, and H. Inoue, “Model of laser cooling in the Yb3+-doped fluorozirconate glass ZBLAN,” Phys. Rev. B 75, 144302 (2007). [CrossRef]

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