Er3+Ylif4 Continuous Wave Cascade Laser Operation At 1620 And 2810 Nm At Room-Temperature

For the first time cw, cascade lasing was demonstrated in 1% Er doped yttrium lithium fluoride (YLF) at room temperature at both 1620 and 2810 nm. In addition, cw lasing in Er[1%]:YLF at 1640 nm and in Er[5%]:YLF at 2810 nm at room temperature is reported for the first time in material of such low concentration

Spectroscopy And Lasing Performance Of Er-Doped Liyf4 And Kyf4

The spectroscopic properties of Er3+ in the fluoride hosts LiYF4 and KYF4 or YLF and KYF respectively, are presented as they relate to cascade lasing of the 4I 11/2 to 4I13/2 and 4I13/2 to 4I15/2 transitions. In this manner simultaneous lasing at near 2800 and 1600 nm is obtained