Femtosecond infrared pulses tunable from 9 to 18 μm at an 88-MHz repetition rate

R. A. Kaindl, D. C. Smith, M. Joschko, M. P. Hasselbeck, M. Woerner, T. Elsaesser

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

Femtosecond mid-infrared laser pulses that are continuously tunable in the wavelength range from 9 to 18 μm 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 Ti:sapphire laser in GaSe. A direct determination of the pulse duration at 11.5 μm gives a value of 140 fs. The average mid-infrared power of 1 μW is ∼100 times greater than that for infrared generation by non-phase-matched optical rectification.

Original languageEnglish (US)
Pages (from-to)861-863
Number of pages3
JournalOptics Letters
Volume23
Issue number11
DOIs
StatePublished - Jun 1 1998
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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