Blue-green upconversion laser

Patent · Mon Jan 01 04:00:00 EST 1990

OSTI ID:867497

Nguyen, Dinh C ^[1]; Faulkner, George E ^[1]

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1. Los Alamos, NM

A blue-green laser (450-550 nm) uses a host crystal doped with Tm.sup.3+. The Tm.sup.+ is excited through upconversion by a red pumping laser and an IR pumping laser to a state which transitions to a relatively lower energy level through emissions in the blue-green band, e.g., 450.20 nm at 75 K. The exciting laser may be tunable dye lasers or may be solid-state semiconductor laser, e.g., GaAlAs and InGaAlP.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of america as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4949348
• OSTI ID: 867497
• Country of Publication: United States
• Language: English

Related Subjects

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20
450
450-550
75
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blue-green
crystal
doped
dye
dye laser
dye lasers
emissions
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energy level
excited
exciting
gaalas
host
host crystal
ingaalp
laser
lasers
level
nm
pumping
pumping laser
relatively
semiconductor
semiconductor laser
solid-state
tm
transitions
tunable
tunable dye
upconversion
upconversion laser