Tunable laser

Details Tunable laser Tunable laser

2008-07-21

2010-11-02

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular beam control device

Tuning

C372S099000, C372S102000, C359S290000

Reexamination Certificate

active

07826501

ABSTRACT:
A mode hop-free tunable laser including a gain medium, a microfabricated blazed grating, defining an external cavity of a given length, the blazed grating lying in a general plane and including a plurality of elongate beams carrying mutually parallel respective reflection surfaces spaced apart from one another with a predefined pitch, and actuating elements designed so as to allow displacements of the assembly with respect to a grating support within a plane substantially parallel to the grating general plane, and including actuation elements designed so as to apply a stretching and a displacement of the assembly in a direction transverse to said reflection surfaces, the blazed grating being arranged relative to an incident light beam provided by the gain medium so that the incident light beam impinges on the reflection surfaces with a substantially normal incident angle.

REFERENCES:
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patent: WO 03/098756 (2003-11-01), None
International Search Report corresponding to PCT/EP2007/050605 filed Jan. 22, 2007.
Shih et al., “MEMS tunable gratings with analog actuation”, Information Sciences; vol. 149, No. 1-3, Jan. 2003; pp. 31-40, XP-002379440.
Yang et al., “Design and fabrication of pitch tunable blaze grating”, Proceedings of SPIE, vol. 5717, pp. 99-107, XP-002379441.
Lee et al., “Single Crystal Silicon (SCS) XY-Stage Fabricated by DRIE and IR alignment”, IEEE, 0-7803-5273-4, pp. 28-33.
Shieh et al., “A Tunable Dispersive Optical System”, NSTI Nanotech 2005 Technical Proceedings, pp. 517-520, XP009065681.
Syms et al., “MOEMS Tuning Element for a Littrow External Cavity Laser”, Journal of Microelectromechanical Systems, vol. 12, No. 6, Dec. 2003, XP-001200229.

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