Blue-green upconversion laser

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867497

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

---

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 (United States)
• 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

blue-green
upconversion
laser
450-550
nm
host
crystal
doped
tm
excited
pumping
transitions
relatively
energy
level
emissions
band
450
20
75
exciting
tunable
dye
lasers
solid-state
semiconductor
gaalas
ingaalp
semiconductor laser
energy level
dye laser
pumping laser
tunable dye
dye lasers
upconversion laser
host crystal
/372/