Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2011-04-12
2011-04-12
Brewster, William M. (Department: 2823)
Coherent light generators
Particular active media
Semiconductor
C372S079000, C438S007000, C438S029000
Reexamination Certificate
active
07924900
ABSTRACT:
A surface emitting laser which is configured by laminating on a substrate a lower reflection mirror, an active layer, and an upper reflection mirror, which includes, in a light emitting section of the upper reflection mirror, a structure for controlling reflectance that is configured by a low reflectance region and a concave high reflectance region formed in the central portion of the low reflectance region, and which oscillates at a wavelength of λ, wherein the upper reflection mirror is configured by a multilayer film reflection mirror based on a laminated structure formed by laminating a plurality of layers, the multilayer film reflection mirror includes a phase adjusting layer which has an optical thickness in the range of λ/8 to 3λ/8 inclusive in a light emitting peripheral portion on the multilayer film reflection mirror, and an absorption layer causing band-to-band absorption is provided in the phase adjusting layer.
REFERENCES:
patent: 7609745 (2009-10-01), Takeuchi
patent: 2009/0080489 (2009-03-01), Uchida et al.
patent: 2009/0135872 (2009-05-01), Uchida et al.
patent: 2009/0135876 (2009-05-01), Takeuchi et al.
patent: 2009/0213889 (2009-08-01), Takeuchi
patent: 2001-284722 (2001-10-01), None
patent: 2007-158153 (2007-06-01), None
H.J. Unold et al., “Singlemode output power enhancement of InGaAs VCSELs by reduced spatial hole burning via surface etching,” Electronics Letters, vol. 37, No. 9, Apr. 26, 2001.
J.A. Vukusic et al., “Numerical Optimization of the Single Fundamental Mode Output from a Surface Modified Vertical-Cavity Surface-Emitting Laser,” IEEE Journal of Quantum Electronics, vol. 37, No. 1, Jan. 2001, pp. 108-117.
Brewster William M.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
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