One-dimensional photonic crystal nanobeam lasers on a flexible substrate

Tsan Wen Lu*, Li Hsun Chiu, Pin Tso Lin, Po Tsung Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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We demonstrate a one-dimensional (1D) photonic crystal (PhC) nanocavity laser composed of hybrid PhC mirrors on a suspended nanobeam (NB) with very small device footprint of 8.5 × 0.57 μm 2 . The 0th-order mode lasing action with low threshold of 280 μW is observed. Via the optical glue stamping process, the devices are directly transferred onto a flexible polypropylene substrate. Single mode lasing action with effective threshold of 17 μW is achieved. The robust lasing properties of the device with different bending radii R from ∞ to 2.5 mm are obtained. Via finite-element method, we also theoretically address that the lasing wavelength is almost invariant when R > 1.0 mm. This flexible 1D PhC NB laser will be a good candidate for efficient nanolaser in future flexible photonic integrated circuits with ultrahigh component density.

Original languageEnglish
Article number071101
JournalApplied Physics Letters
Issue number7
StatePublished - 15 Aug 2011

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