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Class Information
Number: 372/39
Name: Coherent light generators > Particular active media
Description: Subject matter wherein the media in which most of the atoms can be placed in an excited state (i.e., population inversion state), so that an electromagnetic wave of the proper frequency passing through the media can stimulate a cascade of photons, is specified.










Sub-classes under this class:

Class Number Class Name Patents
372/66 Active media with particular shape 275
372/40 Amorphous (e.g., glass) 199
372/55 Gas 683
372/41 Insulating crystal 327
372/51 Liquid 57
372/68 Plural active media or active media having plural dopants 268
372/43.01 Semiconductor 1,489


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8705586 Solid-state laser element Apr. 22, 2014
8660163 Amplification of long-range surface plasmons with reduced noise Feb. 25, 2014
8654806 Organic semiconductor lasers by triplet managers Feb. 18, 2014
8620164 Hybrid III-V silicon laser formed by direct bonding Dec. 31, 2013
8532150 Generating laser light of high beam quality and high pulse quality in large mode area fiber amplifiers based on suppression of high optical modes by fiber coiling Sep. 10, 2013
8526475 Broadening of rare earth ion emission bandwidth in phosphate based laser glasses Sep. 3, 2013
8514901 Silicon-based cooling package for laser gain medium Aug. 20, 2013
8509269 Method for producing a cylindrical optical component of quartz glass and optically active component obtained by said method Aug. 13, 2013
8494021 Organic laser device Jul. 23, 2013
8488641 II-VI MQW VSEL on a heat sink optically pumped by a GaN LD Jul. 16, 2013
8467426 Method and apparatus for cooling a fiber laser or amplifier Jun. 18, 2013
8422524 Rotary disk laser and amplifier configurations Apr. 16, 2013
8420502 Group III-V semiconductor device and method for producing the same Apr. 16, 2013
8416829 Corrosion-resistant multilayer structures with improved reflectivity Apr. 9, 2013
8405066 Nitride-based semiconductor light-emitting device Mar. 26, 2013
8385375 P-element doped laser medium apparatus and method Feb. 26, 2013
8385378 Interband cascade lasers Feb. 26, 2013
8340145 Microwave circuit Dec. 25, 2012
8295317 Method of making nitride semiconductor laser, method of making epitaxial wafer, and nitride semiconductor laser Oct. 23, 2012
8290011 Interband cascade lasers Oct. 16, 2012
8279519 Semiconductor optical modulator, an optical amplifier and an integrated semiconductor light-emitting device Oct. 2, 2012
8223809 Suppression of parasitic lasing Jul. 17, 2012
8218593 Optical devices comprising doped glass materials, laser systems including such optical devices, and methods of forming such optical devices and laser systems Jul. 10, 2012
8213473 Laser based on quantum dot activated media Jul. 3, 2012
8204094 Scalable, efficient laser systems Jun. 19, 2012
8189634 Method of manufacturing a laser gain medium having a spatially variable gain profile May. 29, 2012
8175132 Laser device and lasing method May. 8, 2012
8107035 Laser backlighting for displays Jan. 31, 2012
8098700 Single-exciton nanocrystal laser Jan. 17, 2012
8085828 Portable laser source Dec. 27, 2011
8050303 Laser based on quantum dot activated media with forster resonant energy transfer excitation Nov. 1, 2011
8021636 Preparation of rare-earth halide blocks Sep. 20, 2011
8002413 Light source unit and projector Aug. 23, 2011
8000363 Solid state laser device with reduced temperature dependence Aug. 16, 2011
7995631 Solid-state laser with spatially-tailored active ion concentration using valence conversion with surface masking and method Aug. 9, 2011
7953134 Semiconductor light-emitting device May. 31, 2011
7949026 Group III nitride semiconductor laser May. 24, 2011
7912108 Laser emitting material, method for making the same and use thereof Mar. 22, 2011
7894496 Gain media edge treatment to suppress amplified spontaneous emission in a high power laser Feb. 22, 2011
7885302 Integrated tapered diode laser arrangement and method for producing it Feb. 8, 2011
7885304 Nitride-based semiconductor laser device and method of manufacturing the same Feb. 8, 2011
7860141 Photonic crystal laser Dec. 28, 2010
7842956 Nitride semiconductor laser element and fabrication method thereof Nov. 30, 2010
7835408 Optical transmission system Nov. 16, 2010
7822091 Inverted composite slab sandwich laser gain medium Oct. 26, 2010
7822078 Erbium doped fibres Oct. 26, 2010
7817683 Pulsed linearly polarized optical fiber laser using unpolarized Q-switched seed laser and having good output power stability Oct. 19, 2010
7813394 Laser with gain medium suppressing higher order modes to provide lasing output with high beam quality Oct. 12, 2010
7796660 Three-dimensional photonic crystal light emitting device Sep. 14, 2010
7792168 Heat capacity laser and associated lasing medium Sep. 7, 2010

1 2 3 4 5 6 7 8 9










 
 
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