Engineering the sensitivity and response time of edge-emitting laser hydrogen sensors

Benjamin George Griffin, Amir Arbabi, Lynford Lawrence Goddard

Research output: Contribution to journalArticlepeer-review


Simulation results and experimental measurements are presented for ridge waveguide edge-emitting lasers with a palladium thin film integrated for hydrogen gas detection. The palladium film experiences a refractive index change when in contact with hydrogen, causing a shift in the laser's output power and wavelength. It is found that the sensitivity of the device can be controlled by altering the width of the ridge waveguide, and the response time can be controlled by regulating the operating temperature of the device.

Original languageEnglish (US)
Article number6509439
Pages (from-to)3098-3105
Number of pages8
JournalIEEE Sensors Journal
Issue number8
StatePublished - Jul 31 2013


  • Diode lasers
  • Gas detectors
  • Laser sensors
  • Optoelectronic and photonic sensors

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering


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