Extremely short external cavity lasers: The use of wavelength tuning effects in near field sensing

Janne Aikio, Kari Kataja, Teemu Alajoki, Pentti Karioja, Dennis G. Howe

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

9 Citations (Scopus)


An adjustable extremely short external cavity (ESEC; cavity length 0...50 microns) can be used to tune the wavelength of an edge emitting Fabry-Perot semiconductor laser up to two percents. This means about 30 nm tuning range for the 1550-nm lasers and about 15 nm tuning range for the 800-nm lasers. In addition to the use in WDM and other tunable laser applications, this phenomenon can be directly used in realizing wavelength tuning sensitive near field sensors. In this paper, we discuss the ESEC laser tuning mechanism by using various numerical models and experimentation. We show simulations and experimental results for two different wavelength tuning schemes: a single mirror tuning, and tuning by using a micromachined Fabry Perot interferometer. In addition, we discuss and show results on wavelength tuning enhanced readout in near field optical data storage, and on near field surface profilometry via laser wavelength tuning.
Original languageEnglish
Title of host publicationIntegrated Optics
Subtitle of host publicationDevices, Materials, and Technologies VI
Place of PublicationSan Jose
PublisherInternational Society for Optics and Photonics SPIE
Publication statusPublished - 18 Jun 2002
MoE publication typeNot Eligible
EventPhotonics West 2002 (PW2002): Symposium on Integrated Optoelectronic Devices - San Jose, United States
Duration: 21 Jan 200223 Jan 2002

Publication series

SeriesProceedings of SPIE


ConferencePhotonics West 2002 (PW2002)
CountryUnited States
CitySan Jose

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