Wavelength fine-tuning flexible photonic crystal rods laser

Kun Ting Lai*, Ming Yen Kuo, Kung Shu Hsu, Chun-Ting Lin, Min Hsiung Shih

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this study, a flexible photonic crystal laser was demonstrated with InGaAsP nano rods on a polydimethylsiloxane (PDMS) substrate. The InGaAsP nano-rods content 4 quantum wells which are designed for 1.55 μm communication wavelength. The lasing action was observed around 1550nm which is a band-edge emission at high-symmetry -point of photonic crystals. One of advantages of the flexible laser is the fine-tuning of optical properties by manipulating its geometry. In this work, we observed the lasing wavelength can be controlled by increasing photonic crystal lattice extension. The lasing wavelength was linearly red-shift up to 6 nm as the lattice extension percentage increased to 2.2%. The wavelength tuning rate is approximately 2.69 nm for 1 % lattice extension. Those geometric fine-tuning properties indicate the flexible photonic crystal laser can be applied as a compact tunable light source in photonic crystal integrated circuits or biomedical sensors.

Original languageEnglish
Title of host publicationOrganic Light Emitting Materials and Devices XVI
StatePublished - 1 Dec 2012
EventOrganic Light Emitting Materials and Devices XVI - San Diego, CA, United States
Duration: 12 Aug 201215 Aug 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOrganic Light Emitting Materials and Devices XVI
CountryUnited States
CitySan Diego, CA


  • Flexible lasers
  • Nanorod lasers
  • Photonic crystals

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