Four-level multiply doped rare earth laser system

Details Four-level multiply doped rare earth laser system Four-level multiply doped rare earth laser system

1992-04-28

1994-03-29

Gonzalez, Frank

Coherent light generators

Optical fiber laser

372 41, 385115, 385127, 385142, H01S 314

Patent

active

052992101

ABSTRACT:
A system for producing an optical gain, the system including a host having a light conducting path doped with thulium, holmium, and at least one rare earth selected from the group consisting of europium and terbium in respective amounts sufficient to produce an optical gain by energizing the thulium to a .sup.3 H.sub.4 state to produce an optical gain by a .sup.3 H.sub.4 -.sup.3 F.sub.4 transition, producing a 1.47 .mu.m wavelength output. There is subsequent energy transfer from the .sup.3 F.sub.4 state of the thulium to a .sup.5 I.sub.7 state of the holmium, and energy transfer from the .sup.5 I.sub.7 state to the rare earth selected from the group consisting of europium and terbium. The system can include oscillator, amplifier, and superluminescence source configurations. A method for making and a method for using the system are included.

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