Narrow-linewidth laser with a prism grating/GRIN rod lens combination serving as external cavity

Wittmann, J.; Gaukel, G.

doi:10.1049/el:19870378

Cited by 7 publications

(1 citation statement)

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“…The theory has been extended to include additional effects such as the phase shift of the grating during rotation [10] and short cavity lengths [11], and it has been shown that the tuning range achievable with a fixed pivot is limited. Miniature, synchronously tunable Littrow cavity lasers have been demonstrated with fixed [12] 1 Author to whom any correspondence should be addressed. and piezoelectrically tunable [13,14] gratings.…”

Section: Introductionmentioning

confidence: 99%

Extended range tuning elements for a microelectromechanical systems external cavity laser

Syms¹,

Lohmann²,

Huang³

2006

J. Opt. A: Pure Appl. Opt.

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A modified tuning element for a Littrow external cavity laser is demonstrated using microelectromechanical systems technology. The device combines a vertically etched blazed grating, a compound flexure suspension and drive elements for translating and rotating the grating. Tuning is linearized by linking the grating to a remote actuator by a flexible linkage. A simple theoretical model of the linkage is presented. Devices with electrostatic and electrothermal drives are both demonstrated by deep reactive etching of bonded silicon on insulator, and used to construct electrically tunable lasers. Prototypes show improved electromechanical characteristics and tuning over a range of 8 nm is demonstrated.

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