Grating-based wavelength control of single-and two-color vertical-external-cavity-surface-emitting lasers

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Wide wavelength tunability of single-and two-color operating vertical-external-cavity-surface-emitting lasers (VECSELs) is demonstrated. Employing an external feedback based on a diffractive grating outside the cavity of a narrow-line single-color VECSEL allows for a continuous tuning of the emission wavelength over 10 nm. Employing a dual-feedback-configuration for tunable two-color emission, a tunability of the difference frequency between the two lasing wavelengths from 300 gigahertz to up to 3.5 terahertz is demonstrated.

Original languageEnglish (US)
Pages (from-to)25-27
Number of pages3
JournalOptics letters
Issue number1
StatePublished - Jan 1 2012


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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