| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a1029c1a51afb5222c7d083efecd8546 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B2027-0174
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H1-0248
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03H2260-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-0045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-1857
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-2022
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-105
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-50 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-18 |
| filingDate |
2022-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b0311627d6f1d093961e82a9471804d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_535f6b2dae9fbe4470e1d1397e4bc950
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f56f5b9142ccabaee50108b545a0fe3 |
| publicationDate |
2022-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2022198121-A1 |
| titleOfInvention |
Recording a latent holographic grating and amplification of its dynamic range |
| abstract |
Recording a volume Bragg grating is effectuated by a recording medium formed from a matrix polymer precursor including a controlled radical reactive group, a photoactive base monomer, and a photoinitiator system more reactive with the photoactive base monomer than the controlled radical reactive group in the presence of an excitation source, and a photoredox catalyst. The medium is cured thereby forming a support matrix from the matrix polymer precursor. Exposure to the excitation source through a pattern causes the photoinitiator to polymerize the base monomer, forming a latent grating of the Bragg grating. The latent grating has bright and dark fringes determined by the pattern. The concentration of polymerized base polymer is higher in the bright fringes than in the dark fringes. The exposing causes a portion of the matrix to diffuse into the dark fringes. The support matrix has a lower refractive index than the polymerized photoactive base monomer. |
| priorityDate |
2021-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |