Blue and green cw upconversion lasing in Er:YLiF sub 4

Journal Article · Mon Oct 22 00:00:00 EDT 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.104048· OSTI ID:6283527

Hebert, T; Wannemacher, R; Lenth, W; Macfarlane, R M ^[1]

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1. IBM Research Division, Almaden Research Center, San Jose, CA (USA)

Two new laser transitions are reported for the Er{sup 3+} ion in YLiF{sub 4}: in the blue at 469.7 nm and in the green at 560.6 nm. These are pumped with red and near-infrared laser radiation using nonlinear excitation processes in which more than one upconversion step occurs, yet the threshold pump powers are as low as 10 mW. Single longitudinal mode cw operation was observed at temperatures below 40 K. This is the first report of a blue laser using the Er{sup 3+} ion, and the first report of an infrared-pumped blue laser.

• OSTI ID: 6283527
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 57:17; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ALKALI METAL COMPOUNDS
CHARGED PARTICLES
DATA
ELECTROMAGNETIC RADIATION
ERBIUM IONS
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
INFRARED RADIATION
IONS
LASER RADIATION
LASERS
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
NUMERICAL DATA
OPERATION
OPTICAL PUMPING
POWER RANGE MILLI W
PUMPING
RADIATIONS
SOLID STATE LASERS
TRANSITION ELEMENT COMPOUNDS
VERY LOW TEMPERATURE
VISIBLE RADIATION
YTTRIUM COMPOUNDS
YTTRIUM FLUORIDES