DFB laser with a distributed reflector and photonic band gap

Details DFB laser with a distributed reflector and photonic band gap DFB laser with a distributed reflector and photonic band gap

2007-08-07

2007-08-07

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular resonant cavity

Distributed feedback

C372S099000

Reexamination Certificate

active

10520837

ABSTRACT:
The invention relates to a semiconductor laser consisting of an active waveguide comprising an active region surrounded by a filling material and which is coupled to a distributed reflector. Said distributed reflector is made from the aforementioned filling material and is disposed along the length of the lateral sides of the active region essentially parallel to same and in the form of a structuring having a photonic band gap along the longitudinal axis of the laser. According to the invention, the structuring defines a first photonic crystal with columns forming diffracting elements, said crystal comprising a mesh having dimensions of the order of the wavelength of photons in the guided mode which circulate in the active waveguide.

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T. D. Happ, M. Kamp, A. Forchel, Ridge Waveguide Lasers With 2D Photonic Crystal Mirrors, Proceedings of the 26thInternational symposium On Compound Semiconductors, Berlin, Aug. 22, 26, 1999, Institute of Physics Conference Series, London: IOP, GB, vol. Nr. 166, Aug. 22, 1999, pp. 411-414, XP000921543, ISBN: 0-7503-0704-8 Figure 1.
I. Vurgaftman and J R. Meyer, Photonic-Crystal Distributed-Feedback Lasers, Applied Physics Letters, American Institute of Physics, New York, U.S., vol. 78, No. 11, Mar. 12, 2001, pp. 1475-1477, XP001015018, ISSN: 0003-6951, Figure 1.
M. Kamp, J. Hofmann, F Schafer, M. Reinhard, M. Fischer, T. Bleuel, J. P. Reithmaier, and A. Forchel, Lateral Coupling—A Material Independent Way To Complex Coupled DFB Lasers, Optical Materials, Elsevier Science Publishers B.V. Amsterdam, NL, vol. 17, No. 1-2, Jun. 2001, pp. 19-25, XP004254783, ISSN: 0925-3467, Figure 1.
PCT Search Report, International Application No. PCT/FR 03/02063, dated Feb. 2, 2004.

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