Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3324885
Keywords
air gaps; dye lasers; dyes; elastomers; integrated optics; laser cavity resonators; laser feedback; laser mirrors; laser tuning; light interferometers; micromirrors; moulding; optical polymers; optical pumping; pneumatic systems; replica techniques; waveguide lasers
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We presented a tunable optofluidic dye laser with integrated elastomeric air-gap etalon controlled by air pressure. The chip was fabricated with polydimethylsiloxane (PDMS) via replica molding. It comprises a liquid waveguide and microscale air-gap mirrors providing the feedback. The lasing wavelength is chosen by the interference between two parallel PDMS-air interfaces inside the internal tunable air-gap etalon, of which pneumatic tuning can be realized by inflating the air-gap etalon with compressed air. This dye laser exhibits a pumping threshold of 1.6 mu J/pulse, a lasing linewidth of 3 nm, and a tuning range of 14 nm.
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