Summary
Transient absorption of a long lifetime (≧ 20 s) of YAG: Nd is typical of pure material. It is the main reason of thermal deformation of the laser rods accompanied with power decreases at higher CW input. It may be prevented by an admixture of Fe, Ti or Cr. Using a small admixture (≦ 10−3 wt.%) of Ti or Cr the energy transfer among Nd ions and the gain coefficient may be increased. Cr in a higher concentration absorbs the pumping light and serves as earlier described coactivator (sensitizer) only. Fe impurity fully prevents any increase of the gain of YAG: Nd containing Ti or Cr and causes slow but irreversible degradation of the active parameters. Ce favourably modifies properties of YAG: Nd, Cr. YAG: Nd, Cr, Ce free of iron impurity is advisable active material for powerfull CW lasers.
Similar content being viewed by others
References
Dieke G. H.: Spectra and energy levels of rare earth ions in crystals. John Willey and Sons, New York, 1968, p. 215.
Johnson L. F., Nassau K.: Proc. IRE49 (1961) 1704.
Kaminskii A. A.: Lazernye kristally (Laser Crystals). Nauka, Moskva 1975, p. 112.
Geusic J. E., Marcos H. M., Van Uitert L. G.: Appl. Phys. Lett.4 (1964) 182.
Konigstein J. A., Geusic J. E.: Phys. Rev. A136 (1964) 711.
Koechner W.: Solid State Laser Engineering. Springer Verlag, New York-Heidelberg-Berlin, 1976, p. 57.
Kiss Z. J., Duncan R. C.: Appl. Phys. Lett.5 (1964) 200; Thornton J. R., Fountain W. D., Flint G. W., Crow F. G.: Appl. Opt.8 (1969) 1087.
Pollach S. A.: J. Appl. Phys.38 (1967) 5083.
Holloway W. W., Kestigian M.: J. Opt. Soc. Am.59 (1969) 60;
Kovaleva N. S., Ivanov B. G.: Zh. Prikl. Spektrosk.27 (1977) 546.
Kvapil J., Kvapil Jos., Kubeček V.: Czech. J. Phys. B29 (1979) 1282.
Kvapil J., Kvapil Jos., Kubelka J., Kubeček V.: Czech. J. Phys. B31 (1981) 644.
Kvapil J., Kvapil Jos., Kubelka J., Perner B.: Czech. J. Phys. B32 (1982) 817.
Acharekar M. A.: Laser Focus18 (1982) November, 63.
Kvapil Jos., Kvapil J., Kubelka J., Autrata R.: Cryst. Res. Technol.18 (1983) 127.
Steffen J., Lörtscher J. P., Herziger G.: IEEE J. Quantum Electron.QE-2 (1972) 239;
Kortz H. P., Iffländer R., Weber H.: Appl. Opt.23 (1981) 4124.
Avanesov A. G., Denker B. J., Osiko V. V., Ostroumov V. G., Sakun V. P., Smirnov V. A., Sherbakov I. A.: Kvantovaya Elektron.9 (1982) 681.
Kvapil J., Kvapil Jos., Perner B., Mánek B.: Kristall und Technik10 (1975) 529.
Kimura T., Otsuka K., Saruwatari M.: IEEE J. Quantum Electron.QE-7 (1971) 225;
Kushnir V. R., Shokin A. A.: Kvantovaya Elektron.5 (1978) 1244.
Shokin A. A.: Kvantovaya Elektron.1 (1974) 423;
Kovaleva N. S., Kotelnikova V. G., Yagmurov V. Kh.: Kvantovaya Elektron.8 (1981) 1045;
Kovaleva N. S., Ivanov A. O., Dubrovina E. P.: Kvantovaya Elektron.8 (1981) 2433.
Merkle L. D., Powell R. C.: Phys. Rev. B20 (1979) 75.
Pruss D., Huber G., Blimovski A., Laptev V. V., Scherbakov I. A., Zharikov E. V.: Appl. Phys. B28 (1982) 355;
Zharikov E. V., Il'ichynov N. N., Laptev V. V., Malyutin A. A., Ostroumov V. G., Pashinin P. P., Scherbakov I. A.: Kvantovaya Elektron.9 (1982) 568.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kvapil, J., Kvapil, J., Perner, B. et al. Laser properties of yag: Nd, Cr, Ce. Czech J Phys 34, 581–588 (1984). https://doi.org/10.1007/BF01595714
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01595714