{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:NINEDQNX5EBB6MB3TR5SDLNDZ4","short_pith_number":"pith:NINEDQNX","schema_version":"1.0","canonical_sha256":"6a1a41c1b7e9021f303b9c7b21ada3cf28ba61100fa9c07e2945222e4c50f02b","source":{"kind":"arxiv","id":"1303.1664","version":1},"attestation_state":"computed","paper":{"title":"Reversible Mode Switching in Y coupled Terahertz Lasers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David A. Ritchie, Harvey E. Beere, Md Khairuzzaman, Owen P. Marshall, Subhasish Chakraborty","submitted_at":"2013-03-07T12:38:23Z","abstract_excerpt":"Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved in one QCL using an aperiodic grating, designed using computer-generated hologram techniques, incorporated directly into the QCL waveguide by focussed ion beam milling. Multi-moded emission around 2.9 THz is inhibited, lasing instead occurring at switchable grating-selected frequencies of 2.88 and 2.92 THz. This photonic control and switching behaviour is selectively and reversibly transferred to the second, unmodified"},"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":"1303.1664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-07T12:38:23Z","cross_cats_sorted":[],"title_canon_sha256":"ba78e4d0ad0dc3793cc8652dcfed9a0b2d62021a91abca33ae9544dc41f88751","abstract_canon_sha256":"6af9c97b113b72ffd7c39a488a1db4d3a6a05d163e8d3f471a1830ea6cbb88b2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:15.766955Z","signature_b64":"2LZHwcVPAcffMcFJ8Ne0vDEa5Y7QwDaPArXM22Yn4JjZNsTlFbTc1SVdjfq/3z/1UJic8r3hEMShc3gutXOHCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a1a41c1b7e9021f303b9c7b21ada3cf28ba61100fa9c07e2945222e4c50f02b","last_reissued_at":"2026-05-18T01:51:15.766298Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:15.766298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reversible Mode Switching in Y coupled Terahertz Lasers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David A. Ritchie, Harvey E. Beere, Md Khairuzzaman, Owen P. Marshall, Subhasish Chakraborty","submitted_at":"2013-03-07T12:38:23Z","abstract_excerpt":"Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved in one QCL using an aperiodic grating, designed using computer-generated hologram techniques, incorporated directly into the QCL waveguide by focussed ion beam milling. Multi-moded emission around 2.9 THz is inhibited, lasing instead occurring at switchable grating-selected frequencies of 2.88 and 2.92 THz. This photonic control and switching behaviour is selectively and reversibly transferred to the second, unmodified"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.1664","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":"1303.1664","created_at":"2026-05-18T01:51:15.766431+00:00"},{"alias_kind":"arxiv_version","alias_value":"1303.1664v1","created_at":"2026-05-18T01:51:15.766431+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.1664","created_at":"2026-05-18T01:51:15.766431+00:00"},{"alias_kind":"pith_short_12","alias_value":"NINEDQNX5EBB","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_16","alias_value":"NINEDQNX5EBB6MB3","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_8","alias_value":"NINEDQNX","created_at":"2026-05-18T12:27:52.871228+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/NINEDQNX5EBB6MB3TR5SDLNDZ4","json":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4.json","graph_json":"https://pith.science/api/pith-number/NINEDQNX5EBB6MB3TR5SDLNDZ4/graph.json","events_json":"https://pith.science/api/pith-number/NINEDQNX5EBB6MB3TR5SDLNDZ4/events.json","paper":"https://pith.science/paper/NINEDQNX"},"agent_actions":{"view_html":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4","download_json":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4.json","view_paper":"https://pith.science/paper/NINEDQNX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1303.1664&json=true","fetch_graph":"https://pith.science/api/pith-number/NINEDQNX5EBB6MB3TR5SDLNDZ4/graph.json","fetch_events":"https://pith.science/api/pith-number/NINEDQNX5EBB6MB3TR5SDLNDZ4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4/action/storage_attestation","attest_author":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4/action/author_attestation","sign_citation":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4/action/citation_signature","submit_replication":"https://pith.science/pith/NINEDQNX5EBB6MB3TR5SDLNDZ4/action/replication_record"}},"created_at":"2026-05-18T01:51:15.766431+00:00","updated_at":"2026-05-18T01:51:15.766431+00:00"}