{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:5JW3PLJ6ASGGI7QHA7ETYANMBM","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":"bbbdbb6ce944ecea97da81d38db30da05608fbcf8b895cd98474a4df07a0c915","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-26T16:21:25Z","title_canon_sha256":"dcb1bbd7147c67d9b87c953db761c4f234d7062884cf8c9baed904f3ede5e3b5"},"schema_version":"1.0","source":{"id":"1203.5714","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.5714","created_at":"2026-05-18T02:57:43Z"},{"alias_kind":"arxiv_version","alias_value":"1203.5714v2","created_at":"2026-05-18T02:57:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.5714","created_at":"2026-05-18T02:57:43Z"},{"alias_kind":"pith_short_12","alias_value":"5JW3PLJ6ASGG","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"5JW3PLJ6ASGGI7QH","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"5JW3PLJ6","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:e807900c04fad640475074281100787fab867019b90de9c74b9dd7f5c25c216b","target":"graph","created_at":"2026-05-18T02:57:43Z","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":"We show that experiments clearly verify the assumptions made by the first-order two-wave coupling theory for one dimensional lossless unslanted planar volume holographic gratings using the beta-value method rather than Kogelnik's K-vector closure method. Apart from the fact that the diffraction process is elastic, a much more striking difference between the theories becomes apparent particularly in the direction of the diffracted beam in off-Bragg replay. We therefore monitored the direction of the diffracted beam as a function of the off-Bragg replay angle in two distinct cases: [a] the diffr","authors_text":"Juergen Klepp, Martin Fally, Yasuo Tomita","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-26T16:21:25Z","title":"An experimental study to discriminate between the validity of diffraction theories for off-Bragg replay"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.5714","kind":"arxiv","version":2},"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:ec401925a0865a5ccd44c62f8eba36bf878108a79bdc7ccd7a2d2f8f8963785a","target":"record","created_at":"2026-05-18T02:57:43Z","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":"bbbdbb6ce944ecea97da81d38db30da05608fbcf8b895cd98474a4df07a0c915","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2012-03-26T16:21:25Z","title_canon_sha256":"dcb1bbd7147c67d9b87c953db761c4f234d7062884cf8c9baed904f3ede5e3b5"},"schema_version":"1.0","source":{"id":"1203.5714","kind":"arxiv","version":2}},"canonical_sha256":"ea6db7ad3e048c647e0707c93c01ac0b1d8e3f9db67161f37645af47b9a80202","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea6db7ad3e048c647e0707c93c01ac0b1d8e3f9db67161f37645af47b9a80202","first_computed_at":"2026-05-18T02:57:43.806030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:43.806030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Uxyzi7gul/mmc4zt3SR46nS09wDtJGoSUDwyHkDhk4YbL1p8LT5zaXU5SDuNPGMXEae7ZcffLWPuGjFsifhpCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:43.806452Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.5714","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec401925a0865a5ccd44c62f8eba36bf878108a79bdc7ccd7a2d2f8f8963785a","sha256:e807900c04fad640475074281100787fab867019b90de9c74b9dd7f5c25c216b"],"state_sha256":"9dfa0d40e7771ea6b8730c500a6e9b7fc5ff23b2603e98c676f9015b6e630626"}