TITLE

Violet cw neodymium upconversion laser

AUTHOR(S)
Macfarlane, R. M.; Tong, F.; Silversmith, A. J.; Lenth, W.
PUB. DATE
April 1988
SOURCE
Applied Physics Letters;4/18/1988, Vol. 52 Issue 16, p1300
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have observed cw laser action on a new transition (4D3/2→4I11/2) of the Nd3+ ion at 380 nm. This was demonstrated in Nd:LaF3 using an upconversion pumping scheme in which near infrared (788 nm) and visible (591 nm) pump photons from cw dye lasers produce stepwise excitation of the Nd3+ ion. In addition, lasing was observed with a single pump source at wavelengths around 578 nm using doubly resonant, sequential absorption of two yellow photons. Single-mode, cw operation with an output power of 12 mW was measured at 20 K with 1% output coupling and pump powers of several hundred mW. At 77 K the maximum power dropped to 4 mW.
ACCESSION #
9826568

 

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