{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:Q2HNVPLYKNKE6GXRPE6MOL6PA7","short_pith_number":"pith:Q2HNVPLY","canonical_record":{"source":{"id":"1309.0380","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-09-02T12:36:34Z","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"title_canon_sha256":"6b9730e04ff86852f9d3f8644450fd9d24fbf6afc8dd6d0aee8431db0e28f393","abstract_canon_sha256":"a790cdae5d5735de0ca0e81244f16c2381a1e267a82fea20d256ce071a0b3653"},"schema_version":"1.0"},"canonical_sha256":"868edabd7853544f1af1793cc72fcf07dcce9f53e7fec94697f57e7bfca487ff","source":{"kind":"arxiv","id":"1309.0380","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.0380","created_at":"2026-05-18T01:47:50Z"},{"alias_kind":"arxiv_version","alias_value":"1309.0380v1","created_at":"2026-05-18T01:47:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.0380","created_at":"2026-05-18T01:47:50Z"},{"alias_kind":"pith_short_12","alias_value":"Q2HNVPLYKNKE","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"Q2HNVPLYKNKE6GXR","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"Q2HNVPLY","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:Q2HNVPLYKNKE6GXRPE6MOL6PA7","target":"record","payload":{"canonical_record":{"source":{"id":"1309.0380","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-09-02T12:36:34Z","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"title_canon_sha256":"6b9730e04ff86852f9d3f8644450fd9d24fbf6afc8dd6d0aee8431db0e28f393","abstract_canon_sha256":"a790cdae5d5735de0ca0e81244f16c2381a1e267a82fea20d256ce071a0b3653"},"schema_version":"1.0"},"canonical_sha256":"868edabd7853544f1af1793cc72fcf07dcce9f53e7fec94697f57e7bfca487ff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:50.717517Z","signature_b64":"TvGYVKPTHAXaekdSThya/2Yhae3QRHvdGHS5msTvA1ovrYzXWOCE1BHHzJaZDeBY9cMqHNzBURbompa0o/q8Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"868edabd7853544f1af1793cc72fcf07dcce9f53e7fec94697f57e7bfca487ff","last_reissued_at":"2026-05-18T01:47:50.717036Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:50.717036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.0380","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XSEsEfQU0WAVwxPNr2VG3ZxtzpvCRUwrt8zflQzd8q0zC7IGxCBaPNm9A6q6yGO4z1R8VMauCBeiijXgKQqYAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T21:29:20.907702Z"},"content_sha256":"5aa4d246e8574e1f3aa55141f6d3f5304e882bd4c03d1e7fc5da766e8c6fe4a2","schema_version":"1.0","event_id":"sha256:5aa4d246e8574e1f3aa55141f6d3f5304e882bd4c03d1e7fc5da766e8c6fe4a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:Q2HNVPLYKNKE6GXRPE6MOL6PA7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design, optimization and realization of FLC based Stokes polarimeters and Mueller matrix ellipsometer using a genetic algorithm","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","physics.ins-det"],"primary_cat":"physics.optics","authors_text":"Daniel G. Sk{\\aa}re, Lars Martin S. Aas, Morten Kildemo, P{\\aa}l G. Ellingsen, Paul Anton Letnes","submitted_at":"2013-09-02T12:36:34Z","abstract_excerpt":"The design of broad-band polarimeters with high performance is challenging due to the wavelength dependence of optical components. An efficient Genetic Algorithm (GA) computer code was recently developed in order to design and re-optimize complete broadband Stokes polarimeters and Mueller matrix ellipsometers (MME). Our results are improvements of previous patented designs based on two and three ferroelectric liquid crystals (FLC), and are suited for broad-band hyperspectral imaging, or multichannel spectroscopy applications. We have realized and implemented one design using two FLCs and compa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0380","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DB40807xq5edeW2jOt239/uEguI1dzNl22yZQ84IoP5FkFAkLSroxWTx2XFjLLFgpPfndW9qa02sp+xImWLACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T21:29:20.908046Z"},"content_sha256":"62539aef50174d0fea9c3850d4fbfa250bfc6d94ee95f482feed9c6e2d7a6cbf","schema_version":"1.0","event_id":"sha256:62539aef50174d0fea9c3850d4fbfa250bfc6d94ee95f482feed9c6e2d7a6cbf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7/bundle.json","state_url":"https://pith.science/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-26T21:29:20Z","links":{"resolver":"https://pith.science/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7","bundle":"https://pith.science/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7/bundle.json","state":"https://pith.science/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q2HNVPLYKNKE6GXRPE6MOL6PA7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:Q2HNVPLYKNKE6GXRPE6MOL6PA7","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"a790cdae5d5735de0ca0e81244f16c2381a1e267a82fea20d256ce071a0b3653","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-09-02T12:36:34Z","title_canon_sha256":"6b9730e04ff86852f9d3f8644450fd9d24fbf6afc8dd6d0aee8431db0e28f393"},"schema_version":"1.0","source":{"id":"1309.0380","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.0380","created_at":"2026-05-18T01:47:50Z"},{"alias_kind":"arxiv_version","alias_value":"1309.0380v1","created_at":"2026-05-18T01:47:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.0380","created_at":"2026-05-18T01:47:50Z"},{"alias_kind":"pith_short_12","alias_value":"Q2HNVPLYKNKE","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"Q2HNVPLYKNKE6GXR","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"Q2HNVPLY","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:62539aef50174d0fea9c3850d4fbfa250bfc6d94ee95f482feed9c6e2d7a6cbf","target":"graph","created_at":"2026-05-18T01:47:50Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The design of broad-band polarimeters with high performance is challenging due to the wavelength dependence of optical components. An efficient Genetic Algorithm (GA) computer code was recently developed in order to design and re-optimize complete broadband Stokes polarimeters and Mueller matrix ellipsometers (MME). Our results are improvements of previous patented designs based on two and three ferroelectric liquid crystals (FLC), and are suited for broad-band hyperspectral imaging, or multichannel spectroscopy applications. We have realized and implemented one design using two FLCs and compa","authors_text":"Daniel G. Sk{\\aa}re, Lars Martin S. Aas, Morten Kildemo, P{\\aa}l G. Ellingsen, Paul Anton Letnes","cross_cats":["astro-ph.IM","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-09-02T12:36:34Z","title":"Design, optimization and realization of FLC based Stokes polarimeters and Mueller matrix ellipsometer using a genetic algorithm"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0380","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5aa4d246e8574e1f3aa55141f6d3f5304e882bd4c03d1e7fc5da766e8c6fe4a2","target":"record","created_at":"2026-05-18T01:47:50Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"a790cdae5d5735de0ca0e81244f16c2381a1e267a82fea20d256ce071a0b3653","cross_cats_sorted":["astro-ph.IM","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-09-02T12:36:34Z","title_canon_sha256":"6b9730e04ff86852f9d3f8644450fd9d24fbf6afc8dd6d0aee8431db0e28f393"},"schema_version":"1.0","source":{"id":"1309.0380","kind":"arxiv","version":1}},"canonical_sha256":"868edabd7853544f1af1793cc72fcf07dcce9f53e7fec94697f57e7bfca487ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"868edabd7853544f1af1793cc72fcf07dcce9f53e7fec94697f57e7bfca487ff","first_computed_at":"2026-05-18T01:47:50.717036Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:50.717036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TvGYVKPTHAXaekdSThya/2Yhae3QRHvdGHS5msTvA1ovrYzXWOCE1BHHzJaZDeBY9cMqHNzBURbompa0o/q8Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:50.717517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.0380","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5aa4d246e8574e1f3aa55141f6d3f5304e882bd4c03d1e7fc5da766e8c6fe4a2","sha256:62539aef50174d0fea9c3850d4fbfa250bfc6d94ee95f482feed9c6e2d7a6cbf"],"state_sha256":"389f43bb14c429cd02db4f36260e5d4e2deb98b7fb82a7b7f58abdd357f66bf1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PAY4ruxAEyCAU+wZSMPSQF+ike5aB4ezDAbQbFzpJpRxfVOqRi8f8/84VDtortxHpinF6csIk6lrbyXQSdaPBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T21:29:20.909884Z","bundle_sha256":"b57b61c6f335ced2b2711dfdd317e9a06de79464e1aba064f03b79b2baef4e43"}}