http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6839368-B2
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-094034 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S3-168 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-094 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S3-16 |
| filingDate | 2001-03-16^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-01-04^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc375a8300dc237fd9f5b017bb6f43da |
| publicationDate | 2005-01-04^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6839368-B2 |
| titleOfInvention | Dipolar organic materials producing highly efficient laser-like emission |
| abstract | High-efficiency laser-like emission at low thresholds in dipolar organic materials upon pulsed optical excitation, without using any external mirrors. Unusually high conversion efficiencies and low thresholds in laser-like emission have been observed in the solutions of organic molecular salts having large dipole moments and specific dye molecules having high photoluminescence efficiencies. Pumped with frequency-doubled pulses from a Nd:YAG laser, conversion efficiencies in the range of 15-40% were achieved without incorporation of external mirrors. The threshold pump energies for such emission have been observed to be low (<8 μJ). The spectrally narrowed output beam was found to have low divergence, high degree of polarization, and pulse-width less than that of the excitation pulses (50 picoseconds). The exceptionally low threshold (<1 μJ) and high energy conversion efficiencies observed in molecular salts have been attributed to the large excited-state dipole moment of these noncentrosymmetric molecules favoring strong cooperative (laser-like) emission in spite of small photoluminescence quantum efficiencies. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005152415-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7756172-B2 |
| priorityDate | 2000-03-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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