{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WPRJ4SXHDZKUIJUCOG5PWRYPIC","short_pith_number":"pith:WPRJ4SXH","canonical_record":{"source":{"id":"1403.6458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-25T19:15:52Z","cross_cats_sorted":[],"title_canon_sha256":"b33312b9623ffe2959437d9178d451cc3bb459034536fb91d71376ebd049998d","abstract_canon_sha256":"de06867490da8a6937ea97039a5244e8f2f3ef112ef83b7af5ed60e3449a8dcf"},"schema_version":"1.0"},"canonical_sha256":"b3e29e4ae71e5544268271bafb470f40af673efba9e7ba2fbe589fd2db6faec9","source":{"kind":"arxiv","id":"1403.6458","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.6458","created_at":"2026-05-18T02:55:36Z"},{"alias_kind":"arxiv_version","alias_value":"1403.6458v1","created_at":"2026-05-18T02:55:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.6458","created_at":"2026-05-18T02:55:36Z"},{"alias_kind":"pith_short_12","alias_value":"WPRJ4SXHDZKU","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WPRJ4SXHDZKUIJUC","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WPRJ4SXH","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WPRJ4SXHDZKUIJUCOG5PWRYPIC","target":"record","payload":{"canonical_record":{"source":{"id":"1403.6458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-25T19:15:52Z","cross_cats_sorted":[],"title_canon_sha256":"b33312b9623ffe2959437d9178d451cc3bb459034536fb91d71376ebd049998d","abstract_canon_sha256":"de06867490da8a6937ea97039a5244e8f2f3ef112ef83b7af5ed60e3449a8dcf"},"schema_version":"1.0"},"canonical_sha256":"b3e29e4ae71e5544268271bafb470f40af673efba9e7ba2fbe589fd2db6faec9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:55:36.854876Z","signature_b64":"LHjfKzEjdjjm4kSh7N3deZ66HW2xfN4rFPPrYLU12ZQKmF4RLbuNl1+slYLZJHcq3Y9P0IrNhuuqiBJzNoTnAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3e29e4ae71e5544268271bafb470f40af673efba9e7ba2fbe589fd2db6faec9","last_reissued_at":"2026-05-18T02:55:36.854145Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:55:36.854145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.6458","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":"2026-05-18T02:55:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lSVf/N4596cTcSFJhbnaoIziB9qALlXvFkFpLB+weCZwkXlwYDLWzTXAtnQkp/55GIdaGvROptbwhMPFjGQ8CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:04:38.136422Z"},"content_sha256":"a164d53083063df53e6a20350c8473fb0dd802ee7f70fa5323685619c8ab9b54","schema_version":"1.0","event_id":"sha256:a164d53083063df53e6a20350c8473fb0dd802ee7f70fa5323685619c8ab9b54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WPRJ4SXHDZKUIJUCOG5PWRYPIC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On phase noise of self-injection locked semiconductor lasers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"A. A. Savchenkov, A. B. Matsko, D. Eliyahu, D. Seidel, E. Dale, L. Maleki, V. S. Ilchenko, W. Liang","submitted_at":"2014-03-25T19:15:52Z","abstract_excerpt":"We discuss our recent progress in iimproving the phase noise of a semiconductor laser using self-injection locking of to a mode of a high-Q whispering gallery mode resonator. Locking efficiency is analyzed for semiconductor distributed feedback (DFB) as well as Fabry-Perot (FP) lasers operating at 690nm, 1060nm, 1550nm, and 2000nm. Instantaneous linewidth below 300 Hz is realized with telecom DFB lasers. Tunability of the lasers is demonstrated. Commercially available packaged \"plug-and-play\" devices are manufactured."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.6458","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":"2026-05-18T02:55:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WURqdvzQauEsOq0iRuATMAmBerPraWbrmoqlxPkSRIwgdUDYa0BJThcMmQaZTpB3hA3BxCXRuWrKiag0VxVVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:04:38.136870Z"},"content_sha256":"1a51f2ca8556afc27480b595f8a4f76941fdf6291d23f01c1f45661bf03ea915","schema_version":"1.0","event_id":"sha256:1a51f2ca8556afc27480b595f8a4f76941fdf6291d23f01c1f45661bf03ea915"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC/bundle.json","state_url":"https://pith.science/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC/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":"2026-05-31T23:04:38Z","links":{"resolver":"https://pith.science/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC","bundle":"https://pith.science/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC/bundle.json","state":"https://pith.science/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WPRJ4SXHDZKUIJUCOG5PWRYPIC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WPRJ4SXHDZKUIJUCOG5PWRYPIC","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":"de06867490da8a6937ea97039a5244e8f2f3ef112ef83b7af5ed60e3449a8dcf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-25T19:15:52Z","title_canon_sha256":"b33312b9623ffe2959437d9178d451cc3bb459034536fb91d71376ebd049998d"},"schema_version":"1.0","source":{"id":"1403.6458","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.6458","created_at":"2026-05-18T02:55:36Z"},{"alias_kind":"arxiv_version","alias_value":"1403.6458v1","created_at":"2026-05-18T02:55:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.6458","created_at":"2026-05-18T02:55:36Z"},{"alias_kind":"pith_short_12","alias_value":"WPRJ4SXHDZKU","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WPRJ4SXHDZKUIJUC","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WPRJ4SXH","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:1a51f2ca8556afc27480b595f8a4f76941fdf6291d23f01c1f45661bf03ea915","target":"graph","created_at":"2026-05-18T02:55:36Z","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 discuss our recent progress in iimproving the phase noise of a semiconductor laser using self-injection locking of to a mode of a high-Q whispering gallery mode resonator. Locking efficiency is analyzed for semiconductor distributed feedback (DFB) as well as Fabry-Perot (FP) lasers operating at 690nm, 1060nm, 1550nm, and 2000nm. Instantaneous linewidth below 300 Hz is realized with telecom DFB lasers. Tunability of the lasers is demonstrated. Commercially available packaged \"plug-and-play\" devices are manufactured.","authors_text":"A. A. Savchenkov, A. B. Matsko, D. Eliyahu, D. Seidel, E. Dale, L. Maleki, V. S. Ilchenko, W. Liang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-25T19:15:52Z","title":"On phase noise of self-injection locked semiconductor lasers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.6458","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:a164d53083063df53e6a20350c8473fb0dd802ee7f70fa5323685619c8ab9b54","target":"record","created_at":"2026-05-18T02:55:36Z","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":"de06867490da8a6937ea97039a5244e8f2f3ef112ef83b7af5ed60e3449a8dcf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-25T19:15:52Z","title_canon_sha256":"b33312b9623ffe2959437d9178d451cc3bb459034536fb91d71376ebd049998d"},"schema_version":"1.0","source":{"id":"1403.6458","kind":"arxiv","version":1}},"canonical_sha256":"b3e29e4ae71e5544268271bafb470f40af673efba9e7ba2fbe589fd2db6faec9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3e29e4ae71e5544268271bafb470f40af673efba9e7ba2fbe589fd2db6faec9","first_computed_at":"2026-05-18T02:55:36.854145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:55:36.854145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LHjfKzEjdjjm4kSh7N3deZ66HW2xfN4rFPPrYLU12ZQKmF4RLbuNl1+slYLZJHcq3Y9P0IrNhuuqiBJzNoTnAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:55:36.854876Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.6458","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a164d53083063df53e6a20350c8473fb0dd802ee7f70fa5323685619c8ab9b54","sha256:1a51f2ca8556afc27480b595f8a4f76941fdf6291d23f01c1f45661bf03ea915"],"state_sha256":"f19e957299df28620018abe7eb65ae432355e289f3d94abd7b60fced7cfc7356"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V6qzUrIF/WXbGW3QSGKKs/8elinPq0b744ZseJdhMxMYB8dXSVzYow5/D4agDVCHa1RbJGQ6k7jNWYZBIS4qDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:04:38.140725Z","bundle_sha256":"d7fc2a5478b442ac6ad638ba39ff0991db64b56ddc050e624cd6759a2d704c8f"}}