Laser element doped with rare earth ions, optical amplifier elem

Details Laser element doped with rare earth ions, optical amplifier elem Laser element doped with rare earth ions, optical amplifier elem

1994-01-24

1995-06-20

Scott, Jr., Leon

Coherent light generators

Particular active media

372 6, 372 69, 372 68, H01S 314

Patent

active

054266564

ABSTRACT:
The optical fiber is doped at the core thereof with Tm ions and Nd ions. When light at a wavelength in a 800-nm band for exciting the Nd ions, is incident upon the optical fiber through an incident portion thereof, the Nd ions emit light at a wavelength in the vicinity of 1,012 .mu.m. Through three excitations by absorption of light emitted from the Nd ions and/or energy transfer from the Nd ions, the Tm ions experience three excitation transitions and reach a third high energy level through first and second high energy levels. Thereafter, the Tm ions experience a radiative transition from the third high energy level, thereby to emit blue light at a wavelength of 480 nm.

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