{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:VLUYI4NK5ZSWQC556PJEYH5A2D","short_pith_number":"pith:VLUYI4NK","canonical_record":{"source":{"id":"2504.19875","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-04-28T15:05:58Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ffa0fa803ec3f8480bc52fcf7374b6940fe715e3cea8b27dc0fded6307404132","abstract_canon_sha256":"a49f31d676578cf94ee50249b4d208405d4e78c0c438ae2b8919eba9f2a26c32"},"schema_version":"1.0"},"canonical_sha256":"aae98471aaee65680bbdf3d24c1fa0d0e569f923311c7fec5f96ce14e4187f08","source":{"kind":"arxiv","id":"2504.19875","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.19875","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"arxiv_version","alias_value":"2504.19875v1","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.19875","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"pith_short_12","alias_value":"VLUYI4NK5ZSW","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"pith_short_16","alias_value":"VLUYI4NK5ZSWQC55","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"pith_short_8","alias_value":"VLUYI4NK","created_at":"2026-07-05T10:55:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:VLUYI4NK5ZSWQC556PJEYH5A2D","target":"record","payload":{"canonical_record":{"source":{"id":"2504.19875","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-04-28T15:05:58Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ffa0fa803ec3f8480bc52fcf7374b6940fe715e3cea8b27dc0fded6307404132","abstract_canon_sha256":"a49f31d676578cf94ee50249b4d208405d4e78c0c438ae2b8919eba9f2a26c32"},"schema_version":"1.0"},"canonical_sha256":"aae98471aaee65680bbdf3d24c1fa0d0e569f923311c7fec5f96ce14e4187f08","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:55:05.349956Z","signature_b64":"jnnYC4UxRKjIXpYNxgLvaUsF+AMfJt5DJHaOEALH/hl8+ZtURfrCP2HVIW6KZOpURYlyhjyM0ufT5X7115T/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aae98471aaee65680bbdf3d24c1fa0d0e569f923311c7fec5f96ce14e4187f08","last_reissued_at":"2026-07-05T10:55:05.349548Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:55:05.349548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.19875","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":"2026-07-05T10:55:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wuoR2l9Faiz9cNUEXIIY8LAyo1oRLIyvWt+gCgysAdjN8Nzx3BWtvvm4wFviYnFda3k4pysiN3fepTN11R5gDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-14T00:21:51.459178Z"},"content_sha256":"19db56e69e41df41abc91f20caa26ebe875dad3817ead5c7e96b7549992aaa2c","schema_version":"1.0","event_id":"sha256:19db56e69e41df41abc91f20caa26ebe875dad3817ead5c7e96b7549992aaa2c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:VLUYI4NK5ZSWQC556PJEYH5A2D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fiber laser based stimulated Raman photothermal microscopy with long working distance optics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.optics","authors_text":"Chinmayee V. Prabhu Dessai, Dingcheng Sun, Hongli Ni, Ji-Xin Cheng, Xiaowei Ge, Yifan Zhu, Yueming Li","submitted_at":"2025-04-28T15:05:58Z","abstract_excerpt":"Stimulated Raman scattering (SRS) microscopy is a highly sensitive chemical imaging technique. However, the broader application of SRS has been limited by two key challenges: the reliance on low-noise but bulky solid-state laser sources and stringent sample requirements necessitated by high numerical aperture (NA) optics. Here, we present a fiber laser based stimulated Raman photothermal (SRP) microscope that addresses these limitations. While appreciating the portability and compactness of a noisy source, fiber laser SRP enables a two-order-of-magnitude improvement in signal to noise ratio ov"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.19875","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.19875/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":"2026-07-05T10:55:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4KmcDXK4bKz6Rk1T5D6iC6C3olJQjGQ01BtHfT1HczCYTjPY/d9JZtoVJl4Oa8yW+Yjh7/zzJulUi+JVJ2uBBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-14T00:21:51.459565Z"},"content_sha256":"aed7edee7e175bf0e6a7e49eb28c514ce5275314c839b6b5d423ac02d3d6c096","schema_version":"1.0","event_id":"sha256:aed7edee7e175bf0e6a7e49eb28c514ce5275314c839b6b5d423ac02d3d6c096"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VLUYI4NK5ZSWQC556PJEYH5A2D/bundle.json","state_url":"https://pith.science/pith/VLUYI4NK5ZSWQC556PJEYH5A2D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VLUYI4NK5ZSWQC556PJEYH5A2D/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":"2026-07-14T00:21:51Z","links":{"resolver":"https://pith.science/pith/VLUYI4NK5ZSWQC556PJEYH5A2D","bundle":"https://pith.science/pith/VLUYI4NK5ZSWQC556PJEYH5A2D/bundle.json","state":"https://pith.science/pith/VLUYI4NK5ZSWQC556PJEYH5A2D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VLUYI4NK5ZSWQC556PJEYH5A2D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:VLUYI4NK5ZSWQC556PJEYH5A2D","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":"a49f31d676578cf94ee50249b4d208405d4e78c0c438ae2b8919eba9f2a26c32","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-04-28T15:05:58Z","title_canon_sha256":"ffa0fa803ec3f8480bc52fcf7374b6940fe715e3cea8b27dc0fded6307404132"},"schema_version":"1.0","source":{"id":"2504.19875","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.19875","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"arxiv_version","alias_value":"2504.19875v1","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.19875","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"pith_short_12","alias_value":"VLUYI4NK5ZSW","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"pith_short_16","alias_value":"VLUYI4NK5ZSWQC55","created_at":"2026-07-05T10:55:05Z"},{"alias_kind":"pith_short_8","alias_value":"VLUYI4NK","created_at":"2026-07-05T10:55:05Z"}],"graph_snapshots":[{"event_id":"sha256:aed7edee7e175bf0e6a7e49eb28c514ce5275314c839b6b5d423ac02d3d6c096","target":"graph","created_at":"2026-07-05T10:55:05Z","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/2504.19875/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Stimulated Raman scattering (SRS) microscopy is a highly sensitive chemical imaging technique. However, the broader application of SRS has been limited by two key challenges: the reliance on low-noise but bulky solid-state laser sources and stringent sample requirements necessitated by high numerical aperture (NA) optics. Here, we present a fiber laser based stimulated Raman photothermal (SRP) microscope that addresses these limitations. While appreciating the portability and compactness of a noisy source, fiber laser SRP enables a two-order-of-magnitude improvement in signal to noise ratio ov","authors_text":"Chinmayee V. Prabhu Dessai, Dingcheng Sun, Hongli Ni, Ji-Xin Cheng, Xiaowei Ge, Yifan Zhu, Yueming Li","cross_cats":["physics.ins-det"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-04-28T15:05:58Z","title":"Fiber laser based stimulated Raman photothermal microscopy with long working distance optics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.19875","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":"sha256:19db56e69e41df41abc91f20caa26ebe875dad3817ead5c7e96b7549992aaa2c","target":"record","created_at":"2026-07-05T10:55:05Z","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":"a49f31d676578cf94ee50249b4d208405d4e78c0c438ae2b8919eba9f2a26c32","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-04-28T15:05:58Z","title_canon_sha256":"ffa0fa803ec3f8480bc52fcf7374b6940fe715e3cea8b27dc0fded6307404132"},"schema_version":"1.0","source":{"id":"2504.19875","kind":"arxiv","version":1}},"canonical_sha256":"aae98471aaee65680bbdf3d24c1fa0d0e569f923311c7fec5f96ce14e4187f08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aae98471aaee65680bbdf3d24c1fa0d0e569f923311c7fec5f96ce14e4187f08","first_computed_at":"2026-07-05T10:55:05.349548Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:55:05.349548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jnnYC4UxRKjIXpYNxgLvaUsF+AMfJt5DJHaOEALH/hl8+ZtURfrCP2HVIW6KZOpURYlyhjyM0ufT5X7115T/CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:55:05.349956Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.19875","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19db56e69e41df41abc91f20caa26ebe875dad3817ead5c7e96b7549992aaa2c","sha256:aed7edee7e175bf0e6a7e49eb28c514ce5275314c839b6b5d423ac02d3d6c096"],"state_sha256":"70b32417f04a05823f8aeeb5acd58b3ebfedbfa1a0d90099f5fccec9f5c278d6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qJtgTpVz2cNPA0+pvMHeIqGRKevfvxi1i+Bbr/TB4sVmoJg22TTVB3MaA+kqp0T/zsZQrZC9N1sZjoREzxIMBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-14T00:21:51.461926Z","bundle_sha256":"b002e435d2e9784002905edf59ba8c5cf30ca1ba44e24a140deee8cf6838098e"}}