Femtosecond infrared pulses tunable from 9 to 18 mum at an 88-MHz repetition rate.
Opt Lett
; 23(11): 861-3, 1998 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-18087366
ABSTRACT
Femtosecond mid-infrared laser pulses that are continuously tunable in the wavelength range from 9 to 18mum are demonstrated. These nearly bandwidth-limited pulses are generated by phase-matched difference-frequency mixing within the broad spectrum of 20-fs pulses from a mode-locked Tisapphire laser in GaSe. A direct determination of the pulse duration at 11.5mum gives a value of 140 fs. The average mid-infrared power of 1muW is ~100 times greater than that for infrared generation by non-phase-matched optical rectification.
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MEDLINE
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En
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Opt Lett
Ano de publicação:
1998
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Article