{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:B4IOGTNHSIOEM335726KAG2CL2","short_pith_number":"pith:B4IOGTNH","canonical_record":{"source":{"id":"1110.0709","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-04T14:52:34Z","cross_cats_sorted":[],"title_canon_sha256":"45e07ebb59b50fcf5b285f003eee53689b364e6c64397d77236e693e841033b9","abstract_canon_sha256":"a548a20010c391e710340e52178306f2639acc54448ad4cecc2a1c88222532e6"},"schema_version":"1.0"},"canonical_sha256":"0f10e34da7921c466f7dfebca01b425eb9728f145aa48fb1124bbbe3bd2d13a5","source":{"kind":"arxiv","id":"1110.0709","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0709","created_at":"2026-05-18T04:11:41Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0709v1","created_at":"2026-05-18T04:11:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0709","created_at":"2026-05-18T04:11:41Z"},{"alias_kind":"pith_short_12","alias_value":"B4IOGTNHSIOE","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"B4IOGTNHSIOEM335","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"B4IOGTNH","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:B4IOGTNHSIOEM335726KAG2CL2","target":"record","payload":{"canonical_record":{"source":{"id":"1110.0709","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-04T14:52:34Z","cross_cats_sorted":[],"title_canon_sha256":"45e07ebb59b50fcf5b285f003eee53689b364e6c64397d77236e693e841033b9","abstract_canon_sha256":"a548a20010c391e710340e52178306f2639acc54448ad4cecc2a1c88222532e6"},"schema_version":"1.0"},"canonical_sha256":"0f10e34da7921c466f7dfebca01b425eb9728f145aa48fb1124bbbe3bd2d13a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:41.169819Z","signature_b64":"jaZiCp/oykz6tHfVQrmDpoTI7ofNxYNVCT4yKN3pnL3yoJxsvCJjF8VLjOQ5d4uucrD/fYNMeoR4QcvjrwhNDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0f10e34da7921c466f7dfebca01b425eb9728f145aa48fb1124bbbe3bd2d13a5","last_reissued_at":"2026-05-18T04:11:41.169387Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:41.169387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.0709","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":"2026-05-18T04:11:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1wQSLFJSbUbM33cfNzKa2KukgwDv5dGxJhVfrK3SC2/rSDBOFo4KHA04Hc/W+zJyB/rxg+dyOt8zfLzHmvHCCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T22:37:09.905038Z"},"content_sha256":"71b09d79322d2654d8fd819f81bf69e54047a4873ff6e31a76c5e7e296c5df82","schema_version":"1.0","event_id":"sha256:71b09d79322d2654d8fd819f81bf69e54047a4873ff6e31a76c5e7e296c5df82"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:B4IOGTNHSIOEM335726KAG2CL2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fully-tunable femtosecond laser source in the ultraviolet spectral range","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"B. Mahieu, C. Callegari, C. Spezzani, C. Vozzi, D. Garzella, F. Frassetto, G. De Ninno, L. Poletto, M. Coreno, M. Devetta, M. Negro, S. Coraggia, S. Stagira","submitted_at":"2011-10-04T14:52:34Z","abstract_excerpt":"We demonstrate experimentally the full tunability of a coherent femtosecond source in the whole ultraviolet spectral region. The experiment relies on the technique of high-order harmonic generation driven by a near-infrared parametric laser source in krypton gas. By tuning the drive wavelength in the range between 1100 to 1900 nm, we generated intense harmonics from near to extreme ultraviolet. A number of photons per shot of the order of 10^7 has been measured for the first harmonic orders. Many novel scientific prospects are expected to benefit from the use of such a table-top tunable source"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0709","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":"2026-05-18T04:11:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EgzLhbQdL/7r+GUYuVzMYeMjo/kCYtHMeP4RAr9t6OLik+ClIW21RKBtAAP0uMBvzBAYXBxUKuodtVB4CgLiAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T22:37:09.905403Z"},"content_sha256":"7c03ca5922641959eafc3dc5df273a0593973abb15cac719f08e4cc6899a6fbb","schema_version":"1.0","event_id":"sha256:7c03ca5922641959eafc3dc5df273a0593973abb15cac719f08e4cc6899a6fbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B4IOGTNHSIOEM335726KAG2CL2/bundle.json","state_url":"https://pith.science/pith/B4IOGTNHSIOEM335726KAG2CL2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B4IOGTNHSIOEM335726KAG2CL2/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":"2026-05-18T22:37:09Z","links":{"resolver":"https://pith.science/pith/B4IOGTNHSIOEM335726KAG2CL2","bundle":"https://pith.science/pith/B4IOGTNHSIOEM335726KAG2CL2/bundle.json","state":"https://pith.science/pith/B4IOGTNHSIOEM335726KAG2CL2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B4IOGTNHSIOEM335726KAG2CL2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:B4IOGTNHSIOEM335726KAG2CL2","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":"a548a20010c391e710340e52178306f2639acc54448ad4cecc2a1c88222532e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-04T14:52:34Z","title_canon_sha256":"45e07ebb59b50fcf5b285f003eee53689b364e6c64397d77236e693e841033b9"},"schema_version":"1.0","source":{"id":"1110.0709","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0709","created_at":"2026-05-18T04:11:41Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0709v1","created_at":"2026-05-18T04:11:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0709","created_at":"2026-05-18T04:11:41Z"},{"alias_kind":"pith_short_12","alias_value":"B4IOGTNHSIOE","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"B4IOGTNHSIOEM335","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"B4IOGTNH","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:7c03ca5922641959eafc3dc5df273a0593973abb15cac719f08e4cc6899a6fbb","target":"graph","created_at":"2026-05-18T04:11:41Z","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 demonstrate experimentally the full tunability of a coherent femtosecond source in the whole ultraviolet spectral region. The experiment relies on the technique of high-order harmonic generation driven by a near-infrared parametric laser source in krypton gas. By tuning the drive wavelength in the range between 1100 to 1900 nm, we generated intense harmonics from near to extreme ultraviolet. A number of photons per shot of the order of 10^7 has been measured for the first harmonic orders. Many novel scientific prospects are expected to benefit from the use of such a table-top tunable source","authors_text":"B. Mahieu, C. Callegari, C. Spezzani, C. Vozzi, D. Garzella, F. Frassetto, G. De Ninno, L. Poletto, M. Coreno, M. Devetta, M. Negro, S. Coraggia, S. Stagira","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-04T14:52:34Z","title":"Fully-tunable femtosecond laser source in the ultraviolet spectral range"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0709","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":"sha256:71b09d79322d2654d8fd819f81bf69e54047a4873ff6e31a76c5e7e296c5df82","target":"record","created_at":"2026-05-18T04:11:41Z","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":"a548a20010c391e710340e52178306f2639acc54448ad4cecc2a1c88222532e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-04T14:52:34Z","title_canon_sha256":"45e07ebb59b50fcf5b285f003eee53689b364e6c64397d77236e693e841033b9"},"schema_version":"1.0","source":{"id":"1110.0709","kind":"arxiv","version":1}},"canonical_sha256":"0f10e34da7921c466f7dfebca01b425eb9728f145aa48fb1124bbbe3bd2d13a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0f10e34da7921c466f7dfebca01b425eb9728f145aa48fb1124bbbe3bd2d13a5","first_computed_at":"2026-05-18T04:11:41.169387Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:41.169387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jaZiCp/oykz6tHfVQrmDpoTI7ofNxYNVCT4yKN3pnL3yoJxsvCJjF8VLjOQ5d4uucrD/fYNMeoR4QcvjrwhNDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:41.169819Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.0709","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71b09d79322d2654d8fd819f81bf69e54047a4873ff6e31a76c5e7e296c5df82","sha256:7c03ca5922641959eafc3dc5df273a0593973abb15cac719f08e4cc6899a6fbb"],"state_sha256":"11e54398721ca71526a01c76af7f88dfbb6cf357230b76e5b48c111c0bbb8af4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WRIESH/2X5d342qFjyNCTZaGBHPymnqQXl3ik0ViFfsxFizg2tjScBva9IHUMTmYpXR6a72iLtSZ9OtL4YbRCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T22:37:09.906598Z","bundle_sha256":"d2c1c2439049a06d6edb3bdea02de11a3b12c47a631dd36d1af71eccb7a57a76"}}