Er3+ has come to prominence recently as the rare earth dopant of choice for 3-μm lasing. However, its lower laser level has a longer lifetime than the upper laser level, which usually leads to self-termination of lasing.
© 1989 Optical Society of America
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
Login to access OSA Member Subscription