OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 6 — Feb. 20, 1998
  • pp: 1062–1067

Efficient Continuous-Wave Radiatively Cooled Cr4+:Forsterite Lasers at Room Temperature

Alphan Sennaroglu  »View Author Affiliations


Applied Optics, Vol. 37, Issue 6, pp. 1062-1067 (1998)
http://dx.doi.org/10.1364/AO.37.001062


View Full Text Article

Acrobat PDF (175 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Results of a detailed experimental investigation aimed at reducing the thermal loading problem in a cw Cr<sup>4+</sup>:forsterite laser at elevated temperatures are presented. From a Cr<sup>4+</sup>:forsterite crystal with a differential absorption coefficient of 0.57 cm<sup>−1</sup>, as much as 900 mW of cw output power has been obtained at 1.26 μm and at a crystal boundary temperature of 15 °C with an absorbed pump power of only 4.5 W at 1.06 μm. No chopping of the pump beam was necessary. An efficient radiative cooling technique was further employed to cool the laser and no subsequent power fading was observed. To the author’s knowledge, the measured absorbed power slope efficiency of 29.5% represents the highest cw power performance reported to date from a Cr<sup>4+</sup>:forsterite laser pumped by a Nd:YAG laser around room temperature. The role of the low differential absorption coefficient in the reduction of thermal loading is further elucidated by presenting comparative cw power performance data with a second Cr<sup>4+</sup>:forsterite crystal having a differential absorption coefficient of 1.78 cm<sup>−1</sup> in the temperature range between 12 and 35 °C. Finally, some interesting multipulse effects of the laser observed in the millisecond regime during quasi-cw operation at 50% duty cycle are described.

© 1998 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(140.6810) Lasers and laser optics : Thermal effects

Citation
Alphan Sennaroglu, "Efficient Continuous-Wave Radiatively Cooled Cr4+:Forsterite Lasers at Room Temperature," Appl. Opt. 37, 1062-1067 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-6-1062


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. V. Petricevic, S. K. Gayen, and R. R. Alfano, “Laser action in chromium-doped forsterite,” Appl. Phys. Lett. 52, 1040–1042 (1988).
  2. V. Petricevic, S. K. Gayen, and R. R. Alfano, “Continuous-wave laser operation of chromium-doped forsterite,” Opt. Lett. 14, 612–614 (1989).
  3. A. Seas, V. Petricevic, and R. R. Alfano, “Continuous-wave mode-locked operation of a chromium-doped forsterite laser,” Opt. Lett. 16, 1668–1670 (1991).
  4. A. Sennaroglu, T. J. Carrig, and C. R. Pollock, “Femtosecond pulse generation by using an additive-pulse mode-locked chromium-doped forsterite laser operated at 77 K,” Opt. Lett. 17, 1216–1218 (1992).
  5. A. Seas, V. Petricevic, and R. R. Alfano, “Generation of sub-100-fs pulses from a cw mode-locked chromium-doped forsterite laser,” Opt. Lett. 17, 937–939 (1992).
  6. A. Sennaroglu, C. R. Pollock, and H. Nathel, “Generation of 48-fs pulses and measurement of crystal dispersion by using a regeneratively initiated self-mode-locked chromium-doped forsterite laser,” Opt. Lett. 18, 826–828 (1993).
  7. Y. Pang, V. Yanovsky, F. Wise, and B. I. Minkov, “Self-mode-locked Cr:forsterite laser,” Opt. Lett. 18, 1168–1170 (1993).
  8. T. J. Carrig and C. R. Pollock, “Tunable, cw operation of a multiwatt forsterite laser,” Opt. Lett. 16, 1662–1664 (1991).
  9. T. J. Carrig and C. R. Pollock, “Performance of a continuous-wave forsterite laser with krypton ion, Ti:sapphire, and Nd:YAG pump lasers,” IEEE J. Quantum Electron. 29, 2835–2844 (1993).
  10. A. A. Ivanov, B. I. Minkov, G. Jonusauskas, J. Oberle, and C. Rulliere, “Influence of Cr4+ ion concentration on cw operation of forsterite laser and its relation to thermal problems,” Opt. Commun. 116, 131–135 (1995).
  11. E. G. Behrens, M. G. Jani, R. C. Powell, H. R. Verdun, and A. Pinto, “Lasing properties of chromium–aluminum-doped forsterite pumped with an alexandrite laser,” IEEE J. Quantum Electron. 27, 2042–2049 (1991).
  12. B. Golubovic, B. E. Bouma, I. P. Bilinsky, J. G. Fujimoto, and V. P. Mikhailov, “Thin crystal, room-temperature Cr4+:forsterite laser using near-infrared pumping,” Opt. Lett. 21, 1993–1995 (1996).
  13. R. Mellish, Y. P. Tong, P. M. W. French, and J. R. Taylor, “All-solid-state Kerr lens mode-locked Cr4+:forsterite and Cr4+:YAG laser systems,” in Advanced Solid-State Lasers, C. R. Pollock and W. R. Bosenberg, eds., Vol. 10 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1997), pp. 332–335.
  14. A. Sennaroglu, C. R. Pollock, and H. Nathel, “Efficient continuous-wave chromium-doped YAG laser,” J. Opt. Soc. Am. B 12, 930–937 (1995).
  15. A. Sennaroglu, “Continuous wave thermal loading in saturable absorbers: theory and experiment,” Appl. Opt. 36, 9528–9535 (1997).
  16. S. A. Payne, L. L. Chase, H. W. Newkirk, L. K. Smith, and W. F. Krupke, “LiCaAlF6:Cr3+: a promising new solid-state laser material,” IEEE J. Quantum Electron. 24, 2243–2252 (1988).
  17. V. G. Baryshevski, M. V. Korzhik, M. G. Livshitz, A. A. Tarasov, A. E. Kimaev, I. I. Mishkel, M. L. Meilman, B. J. Minkov, and A. P. Shkandarevich, “Properties of forsterite and the performance of forsterite lasers with lasers and flashlamp pumping,” in Advanced Solid-State Lasers, G. Dube and L. Chase, eds., Vol. 10 of OSA Proceedings Series (Optical Society of America, Washington, D.C., 1991), pp. 26–34.
  18. A. Sennaroglu, C. R. Pollock, and H. Nathel, “Generation of tunable femtosecond pulses in the 1.21–1.27 μm and 605–635 nm wavelength region by using a regeneratively initiated self-mode-locked Cr:forsterite laser,” IEEE J. Quantum Electron. 30, 1851–1861 (1994).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited