{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:XK6G3I3LA33TYDVZ2HWRM6FEMC","short_pith_number":"pith:XK6G3I3L","schema_version":"1.0","canonical_sha256":"babc6da36b06f73c0eb9d1ed1678a4608ef44d884af6ab75c1e8f91e588c6bcc","source":{"kind":"arxiv","id":"1810.06393","version":1},"attestation_state":"computed","paper":{"title":"400%/W second harmonic conversion efficiency in $\\mathrm{14 \\mu m}$-diameter gallium phosphide-on-oxide resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.app-ph","authors_text":"Alan D. Logan, Alejandro W. Rodriguez, Arka Majumdar, Emma R. Schmidgall, Fariba Hatami, Kai-Mei C. Fu, Karine Hestroffer, Michael Gould, Weiliang Jin, Zin Lin","submitted_at":"2018-10-10T20:59:02Z","abstract_excerpt":"Second harmonic conversion from 1550~nm to 775~nm with an efficiency of 400% W$^{-1}$ is demonstrated in a gallium phosphide (GaP) on oxide integrated photonic platform. The platform consists of doubly-resonant, phase-matched ring resonators with quality factors $Q \\sim 10^4$, low mode volumes $V \\sim 30 (\\lambda/n)^3$, and high nonlinear mode overlaps. Measurements and simulations indicate that conversion efficiencies can be increased by a factor of 20 by improving the waveguide-cavity coupling to achieve critical coupling in current devices."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1810.06393","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-10-10T20:59:02Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"5a899502f07548d2040e3a5fe9eac39072e9776d127da1bb7a1009ff55e91fed","abstract_canon_sha256":"177e9b72623e996ec24e9c2df7cad4dd042ffe8a739b9c178e7a8e574d90c162"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:39.642399Z","signature_b64":"juRq9N4w1OvTxwa18++4DHtT4iMbwtzZzQJN6YRrLEoeilZ+OmJFDRZVWAIV3meTS432qM/DBgjjcMFGHG36DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"babc6da36b06f73c0eb9d1ed1678a4608ef44d884af6ab75c1e8f91e588c6bcc","last_reissued_at":"2026-05-17T23:57:39.641924Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:39.641924Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"400%/W second harmonic conversion efficiency in $\\mathrm{14 \\mu m}$-diameter gallium phosphide-on-oxide resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.app-ph","authors_text":"Alan D. Logan, Alejandro W. Rodriguez, Arka Majumdar, Emma R. Schmidgall, Fariba Hatami, Kai-Mei C. Fu, Karine Hestroffer, Michael Gould, Weiliang Jin, Zin Lin","submitted_at":"2018-10-10T20:59:02Z","abstract_excerpt":"Second harmonic conversion from 1550~nm to 775~nm with an efficiency of 400% W$^{-1}$ is demonstrated in a gallium phosphide (GaP) on oxide integrated photonic platform. The platform consists of doubly-resonant, phase-matched ring resonators with quality factors $Q \\sim 10^4$, low mode volumes $V \\sim 30 (\\lambda/n)^3$, and high nonlinear mode overlaps. Measurements and simulations indicate that conversion efficiencies can be increased by a factor of 20 by improving the waveguide-cavity coupling to achieve critical coupling in current devices."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.06393","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1810.06393","created_at":"2026-05-17T23:57:39.642010+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.06393v1","created_at":"2026-05-17T23:57:39.642010+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.06393","created_at":"2026-05-17T23:57:39.642010+00:00"},{"alias_kind":"pith_short_12","alias_value":"XK6G3I3LA33T","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_16","alias_value":"XK6G3I3LA33TYDVZ","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_8","alias_value":"XK6G3I3L","created_at":"2026-05-18T12:33:01.666342+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC","json":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC.json","graph_json":"https://pith.science/api/pith-number/XK6G3I3LA33TYDVZ2HWRM6FEMC/graph.json","events_json":"https://pith.science/api/pith-number/XK6G3I3LA33TYDVZ2HWRM6FEMC/events.json","paper":"https://pith.science/paper/XK6G3I3L"},"agent_actions":{"view_html":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC","download_json":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC.json","view_paper":"https://pith.science/paper/XK6G3I3L","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.06393&json=true","fetch_graph":"https://pith.science/api/pith-number/XK6G3I3LA33TYDVZ2HWRM6FEMC/graph.json","fetch_events":"https://pith.science/api/pith-number/XK6G3I3LA33TYDVZ2HWRM6FEMC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC/action/storage_attestation","attest_author":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC/action/author_attestation","sign_citation":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC/action/citation_signature","submit_replication":"https://pith.science/pith/XK6G3I3LA33TYDVZ2HWRM6FEMC/action/replication_record"}},"created_at":"2026-05-17T23:57:39.642010+00:00","updated_at":"2026-05-17T23:57:39.642010+00:00"}