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Er,Yb:YAB crystals

26 Apr 2019

Er3+,Yb3+ co-doped yttrium-aluminium borate (Er, Yb:YAB) crystal is an alternative to commonly used Er,Yb:phosphate glass for application as an active medium of “eye-safe” (1,5-1,6 μm) lasers with high average output power in CW and pulsed modes. It is characterized by high thermal conductivity of 7,7 Wm-1K-1 and 6 Wm-1K-1 along a-axis and c-axis, respectively. Also features high efficiency of Yb3+ → Er3+ energy transfer (~94%) and weak upconversion losses due to very short lifetime of 4I11/2 excited state (~80 ns) facilitated by high maximum phonon energy of host (hvmax ~1500 cm-1). A strong and wide (~17 nm) absorption band is observed at 976 nm that coincides with emission spectrum of InGaAs laser diodes.

Main features

  • Uniaxial crystal with trigonal structure
  • High thermal conductivity
  • Wide absorption bandwidth near 976 nm
  • High absorption and emission cross-sections
  • Extemely high Yb3+ → Er3+ energy transfer efficiency 

Application examples

  • High power eye-safe (~1,5 μm) CW lasers for metrology
  • High-repetition rate passively Q-switched lasers for LIDAR and LIBS
    systems
  • Ultrashort mode-locked lasers for telecom systems

https://4lasers.com/components/crystals/laser-crystals/er-yb-co-doped-crystals/er-yb-yab-crystals

Contact us

sales@4lasers.com

Optogama UAB 

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