(F2+)A centers can be produced in additively colored KI:Li crystals provided that the material is colored in a nitrogen-free atmosphere. The optical properties of (F2+)A centers in both additively colored KI:Li and KBr:Li are identical with those reported for electron-beam-colored materials. Formation of (F2+)A centers in additively colored KI:Li provides the basis for achieving a stable color-center laser material tunable from 2 to 4 μm.
© 1986 Optical Society of America
Original Manuscript: November 25, 1985
Manuscript Accepted: January 14, 1986
Published: April 1, 1986
David R. Foster and Irwin Schneider, "(F2+)A centers in additively colored lithium-doped KI and KBr," Opt. Lett. 11, 213-215 (1986)