Tunable on chip optofluidic laser

Avraham Bakal, Christoph Vannahme, Anders Kristensen, Uriel Levy

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


A chip scale tunable laser in the visible spectral band is realized by generating a periodic droplet array inside a microfluidic channel. Combined with a gain medium within the droplets, the periodic structure provides the optical feedback of the laser. By controlling the pressure applied to two separate inlets we can change the period of the droplet array. As a result, the lasing frequency is tuned over a broad spectral range. Using this configuration, we demonstrate wavelength tunability of about 70 nm and lasing threshold of about 15 μ J / mm 2.

Original languageAmerican English
Article number211105
JournalApplied Physics Letters
Issue number21
StatePublished - 23 Nov 2015

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