http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2571117-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e1721d4d67e8b8653dc3dd84792be73c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-0064 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-026 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-026 |
| filingDate | 2011-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d36241d8d2cf127053124dfe54818e83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b2a833687a348e3b624ff7f49110178 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_225595578de9ff232f7698d0c230304c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c3ad9acd088e32db8bd218f95d34301 |
| publicationDate | 2013-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2571117-A1 |
| titleOfInvention | Laser unit with reduced back reflection |
| abstract | Laser unit 1, preferably for gas detection, comprising a semiconductor laser chip 2 and optionally a beam shaping element 4 forming the laser beam 9 emanating from the semiconductor laser chip 2, which are preferably enclosed in a hermetically sealed housing with exit window for the laser beam 9. According to the invention, a self-mixing reducing optical element 3 is arranged at the exit zone 10 of the semiconductor laser chip 2 with direct physical contact and connected to the laser chip at least in an exit zone 10 for the laser beam 9 by an optical medium or materially. In an alternative embodiment, the outcoupling mirror 6 can first be applied to the self-mixing reducing optical element 3 and then connected in a subsequent step to a VCSEL half-laser chip, preferably by wafer bonding. Optionally, a beam-shaping element 4, for example a microlens, is disposed on the self-mixing reducing optical element 3, which is connected to the self-mixing reducing optical element 3 by an optical medium or materially. The beam-shaping element 4 and the self-mixing reducing optical element 3 preferably have an identical refractive index and are connected to the adhesives 5, 8 with each other and to the semiconductor laser chip 2, which have a refractive index matching them. |
| priorityDate | 2011-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.