Extreme ultra-low lasing threshold of full-polymeric fundamental microdisk printed with room-temperature atmospheric ink-jet technique

Hiroaki Yoshioka, Tomoya Ota, Cong Chen, Soichiro Ryu, Kei Yasui, Yuji Oki

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We experimentally demonstrated an extreme ultra-low lasing threshold from full-polymeric fundamental microdisk cavities fabricated by a novel fabrication method, the ink-jet printing method, which is much simpler and easier than previous methods such as lithography. The ink-jet printing method provides additive, room-temperature atmospheric, rapid fabrication with only two steps: (i) stacking cladding pedestal and waveguiding disk spots using the ink-jet technique, and (ii) partial etching of the cladding pedestal envelope. Two kinds of low-viscosity polymers successfully formed microdisks with high surface homogeneity, and one of the polymers doped with LDS798 dye yielded whispering-gallery-mode lasing. The fundamental disks exhibited an extremely ultra-low lasing threshold of 0.33 μ J/mm 2 at a wavelength of 817.3 nm. To the best of our knowledge, this lasing threshold is the lowest threshold obtained among both organic and inorganic fundamental microdisk cavity lasers with a highly confined structure.

Original languageEnglish
Article number10623
JournalScientific reports
Volume5
DOIs
Publication statusPublished - May 29 2015

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inks
lasing
thresholds
room temperature
printing
fabrication
whispering gallery modes
polymers
laser cavities
homogeneity
envelopes
lithography
dyes
etching
viscosity
cavities
wavelengths

All Science Journal Classification (ASJC) codes

  • General

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Extreme ultra-low lasing threshold of full-polymeric fundamental microdisk printed with room-temperature atmospheric ink-jet technique. / Yoshioka, Hiroaki; Ota, Tomoya; Chen, Cong; Ryu, Soichiro; Yasui, Kei; Oki, Yuji.

In: Scientific reports, Vol. 5, 10623, 29.05.2015.

Research output: Contribution to journalArticle

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