242 nm continuous tuning from a GRIN-SC-MQW-BH InGaAsP laser in an extended cavity

Bagley, Micaela; Wyatt, R.; Elton, David J.; Wickes, H.J.; Spurdens, P.C.; Seltzer, C.P.; Cooper, D.M.; Devlin, William J.

doi:10.1049/el:19900178

Cited by 25 publications

(13 citation statements)

References 2 publications

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“…Currently, the main effort is directed towards development of the designs suitable for building optical integrated systems. Nevertheless, the best practical results have been obtained so far with the systems that use bulk mobile gratings in the cavity [26][27][28].…”

Section: External Cavity Lasermentioning

confidence: 99%

“…Incorporating pseudomorphic In x Ga 1-x As quantum wells in an Al y Ga 1-y As-GaAs material system has resulted in a structure which allows for an increased band filling and tuning range extending to 130 nm [30] (845.4 nm < l < 975.6 nm). However, broadly tunable QW laser diodes have been mainly focused on materials which contain multiple identical wells (MQW) [33,26] including QWs with strained layers [34]. In addition, gain calculations and experiments have shown that a wider and flatter gain profile than that of a material which consists of say three identical QWs can be obtained when we use non-identical QWs [35] with different QW width or barrier height.…”

Section: Semiconductor Optical Amplifiersmentioning

confidence: 99%

“…The graded index layer was composed of a series of four step-like lattice-matched InGaAsP layers with successively increasing band gaps represented by l = 1.04,1.12, l.21, and l.25 µm. A similar laser with regard to the active region structure demonstrated operation in the wavelength region extending from 1320 nm to 1562 nm that translates to 242 nm of continuous tuning [26].…”

Section: Semiconductor Optical Amplifiersmentioning

confidence: 99%

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External cavity wavelength tunable semiconductor lasers - a review

Mroziewicz

2008

Opto-Electronics Review

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External cavity tunable lasers have been around for many years and now constitute a large group of semiconductor lasers featuring very unique properties. The present review has been restricted to the systems based on the edge emitting diode lasers set-up in a hybrid configuration. The aim was to make the paper as concise as possible without sacrificing, however, most important details. We start with short description of the fundamentals essential for operation of the external cavity lasers to set the stage for explanation of their properties and some typical designs. Then, semiconductor optical amplifiers used in the external cavity lasers are highlighted more in detail as well as diffraction gratings and other types of wavelength-selective reflectors used to provide optical feedback in these lasers. This is followed by a survey of designs and properties of various external cavity lasers both with mobile bulk gratings and with fixed wavelength selective mirrors. The paper closes with description of some recent developments in the field to show prospects for further progress directed towards miniaturization and integration of the external cavity laser components used so far to set-up hybrid systems.

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Section: External Cavity Lasermentioning

confidence: 99%

Section: Semiconductor Optical Amplifiersmentioning

confidence: 99%

Section: Semiconductor Optical Amplifiersmentioning

confidence: 99%

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External cavity wavelength tunable semiconductor lasers - a review

Mroziewicz

2008

Opto-Electronics Review

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“…Later on, DFB lasers with an additional phase-tuning section were developed and it was shown that one could obtain reproducible and controllable SPs in such devices 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Characterizations of multi-segment DFB laser

Mohseni

Alhasson

Matin

2008

Optics and Photonics for Information Processing II

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Tunable semiconductor laser has various applications including Wavelength Division Multiplexing (WDM), Frequency Division Multiplexing (FDM), optical switching in Local Area Networks (LAN) and Chemical Sensing, or Spectroscopy. There are different approaches for tunable semiconductor lasers. Large wavelength tuning range is required for communication applications, such as WDM. Whereas a frequency modulation (FM) requires small but fast frequency shifts. Two-Segment laser is one of the methods to realize continuous optical tuning. The device consists of two coupled cavities having a series of well-defined modes. The modes are equally spaced within a cavity but the mode spacing between the two cavities is slightly different. Characterization results of such lasers are very important. In this paper we will present the characterization results of two segment InGaAs/InP distributed feed back (DFB) tunable lasers.

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“…Miniature external cavity lasers with blazed gratings were developed at British Telecom Research Labs in the early 1980s [13], [14]. The gratings were mounted in Littrow and tuned using piezoelectric elements.…”

Section: Introductionmentioning

confidence: 99%

MOEMS tuning element for a Littrow external cavity laser

Syms

Lohmann

2003

J. Microelectromech. Syst.

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Abstract-A miniature grating-tunable external cavity laser diode constructed using microoptoelectromechanical systems (MOEMS) technology is described. The tuning element is a vertically etched blazed grating mounted on a compound flexure, which consists of a cantilever in series with a portal frame. The flexure is deflected using comb electrostatic drives to rotate and translate the grating. The tuning element is prototyped using deep reactive ion etching of bonded silicon-on-insulator (SOI) material. Interferometric measurements of electromechanical performance are presented, and departures from the ideal behavior are identified. Electrostatic tuning of a Littrow external cavity laser over a range of 20 nm using a 50-V drive is demonstrated.[1000]Index Terms-External cavity, grating, microelectromechanical systems (MEMS), microoptoelectromechanical systems (MOEMS), semiconductor laser.

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242 nm continuous tuning from a GRIN-SC-MQW-BH InGaAsP laser in an extended cavity

Cited by 25 publications

References 2 publications

External cavity wavelength tunable semiconductor lasers - a review

External cavity wavelength tunable semiconductor lasers - a review

Characterizations of multi-segment DFB laser

MOEMS tuning element for a Littrow external cavity laser

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