{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:WXA5XA3KRCUMPJIXMDEP53CBKK","short_pith_number":"pith:WXA5XA3K","canonical_record":{"source":{"id":"2201.02695","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2022-01-07T22:26:32Z","cross_cats_sorted":[],"title_canon_sha256":"21789b9e30dc5a6c9cdf8dc9c4c8f307e70ccfc192660c47dfb6014fb6901b21","abstract_canon_sha256":"67112e38c12d9b8643423c4cee21f319eaff0381e9991652b22c01a0ce97e088"},"schema_version":"1.0"},"canonical_sha256":"b5c1db836a88a8c7a51760c8feec4152b8711bcd4926d5e6b013cf97420b9364","source":{"kind":"arxiv","id":"2201.02695","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.02695","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"arxiv_version","alias_value":"2201.02695v2","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.02695","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"pith_short_12","alias_value":"WXA5XA3KRCUM","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"pith_short_16","alias_value":"WXA5XA3KRCUMPJIX","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"pith_short_8","alias_value":"WXA5XA3K","created_at":"2026-07-05T04:25:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:WXA5XA3KRCUMPJIXMDEP53CBKK","target":"record","payload":{"canonical_record":{"source":{"id":"2201.02695","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2022-01-07T22:26:32Z","cross_cats_sorted":[],"title_canon_sha256":"21789b9e30dc5a6c9cdf8dc9c4c8f307e70ccfc192660c47dfb6014fb6901b21","abstract_canon_sha256":"67112e38c12d9b8643423c4cee21f319eaff0381e9991652b22c01a0ce97e088"},"schema_version":"1.0"},"canonical_sha256":"b5c1db836a88a8c7a51760c8feec4152b8711bcd4926d5e6b013cf97420b9364","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:25:35.190114Z","signature_b64":"Lv4YjewRtBajSH3tDasdxqf5V8zfvTc+rPgxBLC6TK74jQ/ePPvxGppHZJbk08J0I0nhgihLwwrYNOFZMxoDBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5c1db836a88a8c7a51760c8feec4152b8711bcd4926d5e6b013cf97420b9364","last_reissued_at":"2026-07-05T04:25:35.189634Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:25:35.189634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2201.02695","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:25:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QW1ADo+i1KyOTVMCnp+Nfqtm6dHhIaIkvGRPscFcdFR/9KWkEiTPtj3bgUQSZzEKueT/kXXM5dmAlb44LroZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:44:51.012417Z"},"content_sha256":"57425eb6efc526ec18a0c547c4c1cff33ddef7a874ba648febf2f4722a072d30","schema_version":"1.0","event_id":"sha256:57425eb6efc526ec18a0c547c4c1cff33ddef7a874ba648febf2f4722a072d30"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:WXA5XA3KRCUMPJIXMDEP53CBKK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sensitive control of broad-area semiconductor lasers by cavity shape","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Hui Cao, KyungDuk Kim, Ortwin Hess, Qi Jie Wang, Stefan Bittner, Stefano Guazzotti, Yongquan Zeng, Yuhao Jin","submitted_at":"2022-01-07T22:26:32Z","abstract_excerpt":"The ray dynamics of optical cavities exhibits bifurcation points: special geometries at which ray trajectories switch abruptly between stable and unstable. A prominent example is the Fabry-Perot cavity with two planar mirrors, which is widely employed for broad-area semiconductor lasers. Such cavities support lasing in a relatively small number of transverse modes, and the laser is highly susceptible to filamentation and irregular pulsations. Here we demonstrate experimentally that a slight deviation from this bifurcation point (planar cavity) dramatically changes the laser performance. In a n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.02695","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2201.02695/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:25:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8wcApsLHRRdp5Fmj9uljn+8VKqysDG9x1r7fyurbCwJiNhLbJBf8SmJHxQ89OlOMVArr8/zQtabm0s+0/SzpDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:44:51.012798Z"},"content_sha256":"f5335d08fa495927bc0270b7a49a4cd15388793f70dd4787ffbb138ec2e6cfdb","schema_version":"1.0","event_id":"sha256:f5335d08fa495927bc0270b7a49a4cd15388793f70dd4787ffbb138ec2e6cfdb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WXA5XA3KRCUMPJIXMDEP53CBKK/bundle.json","state_url":"https://pith.science/pith/WXA5XA3KRCUMPJIXMDEP53CBKK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WXA5XA3KRCUMPJIXMDEP53CBKK/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":"2026-07-06T20:44:51Z","links":{"resolver":"https://pith.science/pith/WXA5XA3KRCUMPJIXMDEP53CBKK","bundle":"https://pith.science/pith/WXA5XA3KRCUMPJIXMDEP53CBKK/bundle.json","state":"https://pith.science/pith/WXA5XA3KRCUMPJIXMDEP53CBKK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WXA5XA3KRCUMPJIXMDEP53CBKK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:WXA5XA3KRCUMPJIXMDEP53CBKK","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":"67112e38c12d9b8643423c4cee21f319eaff0381e9991652b22c01a0ce97e088","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2022-01-07T22:26:32Z","title_canon_sha256":"21789b9e30dc5a6c9cdf8dc9c4c8f307e70ccfc192660c47dfb6014fb6901b21"},"schema_version":"1.0","source":{"id":"2201.02695","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.02695","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"arxiv_version","alias_value":"2201.02695v2","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.02695","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"pith_short_12","alias_value":"WXA5XA3KRCUM","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"pith_short_16","alias_value":"WXA5XA3KRCUMPJIX","created_at":"2026-07-05T04:25:35Z"},{"alias_kind":"pith_short_8","alias_value":"WXA5XA3K","created_at":"2026-07-05T04:25:35Z"}],"graph_snapshots":[{"event_id":"sha256:f5335d08fa495927bc0270b7a49a4cd15388793f70dd4787ffbb138ec2e6cfdb","target":"graph","created_at":"2026-07-05T04:25:35Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2201.02695/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ray dynamics of optical cavities exhibits bifurcation points: special geometries at which ray trajectories switch abruptly between stable and unstable. A prominent example is the Fabry-Perot cavity with two planar mirrors, which is widely employed for broad-area semiconductor lasers. Such cavities support lasing in a relatively small number of transverse modes, and the laser is highly susceptible to filamentation and irregular pulsations. Here we demonstrate experimentally that a slight deviation from this bifurcation point (planar cavity) dramatically changes the laser performance. In a n","authors_text":"Hui Cao, KyungDuk Kim, Ortwin Hess, Qi Jie Wang, Stefan Bittner, Stefano Guazzotti, Yongquan Zeng, Yuhao Jin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2022-01-07T22:26:32Z","title":"Sensitive control of broad-area semiconductor lasers by cavity shape"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.02695","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":"sha256:57425eb6efc526ec18a0c547c4c1cff33ddef7a874ba648febf2f4722a072d30","target":"record","created_at":"2026-07-05T04:25:35Z","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":"67112e38c12d9b8643423c4cee21f319eaff0381e9991652b22c01a0ce97e088","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2022-01-07T22:26:32Z","title_canon_sha256":"21789b9e30dc5a6c9cdf8dc9c4c8f307e70ccfc192660c47dfb6014fb6901b21"},"schema_version":"1.0","source":{"id":"2201.02695","kind":"arxiv","version":2}},"canonical_sha256":"b5c1db836a88a8c7a51760c8feec4152b8711bcd4926d5e6b013cf97420b9364","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5c1db836a88a8c7a51760c8feec4152b8711bcd4926d5e6b013cf97420b9364","first_computed_at":"2026-07-05T04:25:35.189634Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:25:35.189634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lv4YjewRtBajSH3tDasdxqf5V8zfvTc+rPgxBLC6TK74jQ/ePPvxGppHZJbk08J0I0nhgihLwwrYNOFZMxoDBw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:25:35.190114Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.02695","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57425eb6efc526ec18a0c547c4c1cff33ddef7a874ba648febf2f4722a072d30","sha256:f5335d08fa495927bc0270b7a49a4cd15388793f70dd4787ffbb138ec2e6cfdb"],"state_sha256":"b185b6184ff487891f4945cab9a71205bfcf947ca5c95db000231fb8ce6341be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R/ros/3uf2/OLs6IA4R520SW7TDXmwzZavizCH2+YZ54C97g91Ajci80+Rm6w+OtAP2oAw5R0mFaerhe4iQtCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T20:44:51.014770Z","bundle_sha256":"bf0d08b5487da2bcf334cf83d16e3e70d011a95c7812acef312938585b1e4d1a"}}