Fe:ZnSe laser pumped by a 2.93-<inline-formula> <tex-math><?CDATA ${\rm{\mu }}{\rm{m}}$?></tex-math><mml:math> <mml:mi mathvariant="normal">μ</mml:mi> <mml:mi mathvariant="normal">m</mml:mi> </mml:math> <inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpb_28_6_064203_ieqn1.gif"/> </inline-formula> Cr, Er:YAG laser

Fe:ZnSe laser pumped by a 2.93-

μ m

Cr, Er:YAG laser

Li Ying-Yi, Dai Tong-Yu, Duan Xiao-Ming, Guo Chun-Fa, Xu Li-Wei, Ju You-Lun^†

Energy diagram of Cr³⁺ and Er³⁺.