{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YYGIISZSNS5IHUVL3LL3GUHUKE","short_pith_number":"pith:YYGIISZS","canonical_record":{"source":{"id":"1711.10749","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-11-29T09:53:44Z","cross_cats_sorted":["physics.app-ph","physics.ins-det"],"title_canon_sha256":"c24a6a1ef8d5951101624d1fde807a86022f1129f8b4fd003c67a59e223a3780","abstract_canon_sha256":"fefd20be6742962eeb9c9083339df3ec1ad74d361dcc05be113605ce019169dc"},"schema_version":"1.0"},"canonical_sha256":"c60c844b326cba83d2abdad7b350f45114cf51aa3615d2a026f17828b6bd1a1a","source":{"kind":"arxiv","id":"1711.10749","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.10749","created_at":"2026-05-18T00:29:17Z"},{"alias_kind":"arxiv_version","alias_value":"1711.10749v1","created_at":"2026-05-18T00:29:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10749","created_at":"2026-05-18T00:29:17Z"},{"alias_kind":"pith_short_12","alias_value":"YYGIISZSNS5I","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"YYGIISZSNS5IHUVL","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"YYGIISZS","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YYGIISZSNS5IHUVL3LL3GUHUKE","target":"record","payload":{"canonical_record":{"source":{"id":"1711.10749","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-11-29T09:53:44Z","cross_cats_sorted":["physics.app-ph","physics.ins-det"],"title_canon_sha256":"c24a6a1ef8d5951101624d1fde807a86022f1129f8b4fd003c67a59e223a3780","abstract_canon_sha256":"fefd20be6742962eeb9c9083339df3ec1ad74d361dcc05be113605ce019169dc"},"schema_version":"1.0"},"canonical_sha256":"c60c844b326cba83d2abdad7b350f45114cf51aa3615d2a026f17828b6bd1a1a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:17.092294Z","signature_b64":"KX1DaZjZzjFwX6sA3Lkrs69W4L160LpaUFX2WhFaMB1vRa0bo+dHfpJozrQ8RG6X/DqAVEAWbqa2RFlOgMjUBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c60c844b326cba83d2abdad7b350f45114cf51aa3615d2a026f17828b6bd1a1a","last_reissued_at":"2026-05-18T00:29:17.091827Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:17.091827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.10749","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":"2026-05-18T00:29:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aA2ZPTmbYL0RibOPTFgG/ubJuie1OuDhoD/wr6JOOh9Bbk3ArStfYto5vJq7eA0G/TjMI/NtXRN2a5OnuKPMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:10:33.298830Z"},"content_sha256":"a9931df65650e51e24a148b360c2bf2e1ea0cf57ff252914633466cac13a864e","schema_version":"1.0","event_id":"sha256:a9931df65650e51e24a148b360c2bf2e1ea0cf57ff252914633466cac13a864e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YYGIISZSNS5IHUVL3LL3GUHUKE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Switching on and off the Risken-Nummedal-Graham-Haken instability in quantum cascade lasers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph","physics.ins-det"],"primary_cat":"physics.optics","authors_text":"A. Gajic, A.V. Antonov, D.I. Kuritsyn, D. L. Boiko, E.E. Orlova, J. Radovanovic, V.V. Vaks","submitted_at":"2017-11-29T09:53:44Z","abstract_excerpt":"We report on experimental observation of low-threshold Risken-Nummedal-Graham-Haken (RNGH) instability in mid-infrared InGaAs/InAlAs Quantum Cascade Lasers (QCLs) operating at 8 $\\mu$m wavelength. The devices employ sequential resonant tunneling and can provide optical gain on the diagonal or vertical transition. Depending on the tunneling resonance detuning, the lasers can operate either on a stable part of I-V curve or with unstable electric field domain formation. We report how all these features impact the occurrence of the RNGH instability with broadband multimode emission, and show how t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10749","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":"2026-05-18T00:29:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tbkl1UZGpKyaN0TPg82GAM5SCklYnnW/sawgE8a/AjHcfS4F75a5rBcc5WezKNWdJQJDZXHyUHdKYzON+PkxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:10:33.299176Z"},"content_sha256":"9ce2c60f7fcef35b0af6c9e4dde510443f38170ef51941a248aa0bb0b9e075f3","schema_version":"1.0","event_id":"sha256:9ce2c60f7fcef35b0af6c9e4dde510443f38170ef51941a248aa0bb0b9e075f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YYGIISZSNS5IHUVL3LL3GUHUKE/bundle.json","state_url":"https://pith.science/pith/YYGIISZSNS5IHUVL3LL3GUHUKE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YYGIISZSNS5IHUVL3LL3GUHUKE/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":"2026-05-28T11:10:33Z","links":{"resolver":"https://pith.science/pith/YYGIISZSNS5IHUVL3LL3GUHUKE","bundle":"https://pith.science/pith/YYGIISZSNS5IHUVL3LL3GUHUKE/bundle.json","state":"https://pith.science/pith/YYGIISZSNS5IHUVL3LL3GUHUKE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YYGIISZSNS5IHUVL3LL3GUHUKE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YYGIISZSNS5IHUVL3LL3GUHUKE","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":"fefd20be6742962eeb9c9083339df3ec1ad74d361dcc05be113605ce019169dc","cross_cats_sorted":["physics.app-ph","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-11-29T09:53:44Z","title_canon_sha256":"c24a6a1ef8d5951101624d1fde807a86022f1129f8b4fd003c67a59e223a3780"},"schema_version":"1.0","source":{"id":"1711.10749","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.10749","created_at":"2026-05-18T00:29:17Z"},{"alias_kind":"arxiv_version","alias_value":"1711.10749v1","created_at":"2026-05-18T00:29:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10749","created_at":"2026-05-18T00:29:17Z"},{"alias_kind":"pith_short_12","alias_value":"YYGIISZSNS5I","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"YYGIISZSNS5IHUVL","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"YYGIISZS","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:9ce2c60f7fcef35b0af6c9e4dde510443f38170ef51941a248aa0bb0b9e075f3","target":"graph","created_at":"2026-05-18T00:29:17Z","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 report on experimental observation of low-threshold Risken-Nummedal-Graham-Haken (RNGH) instability in mid-infrared InGaAs/InAlAs Quantum Cascade Lasers (QCLs) operating at 8 $\\mu$m wavelength. The devices employ sequential resonant tunneling and can provide optical gain on the diagonal or vertical transition. Depending on the tunneling resonance detuning, the lasers can operate either on a stable part of I-V curve or with unstable electric field domain formation. We report how all these features impact the occurrence of the RNGH instability with broadband multimode emission, and show how t","authors_text":"A. Gajic, A.V. Antonov, D.I. Kuritsyn, D. L. Boiko, E.E. Orlova, J. Radovanovic, V.V. Vaks","cross_cats":["physics.app-ph","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-11-29T09:53:44Z","title":"Switching on and off the Risken-Nummedal-Graham-Haken instability in quantum cascade lasers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10749","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:a9931df65650e51e24a148b360c2bf2e1ea0cf57ff252914633466cac13a864e","target":"record","created_at":"2026-05-18T00:29:17Z","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":"fefd20be6742962eeb9c9083339df3ec1ad74d361dcc05be113605ce019169dc","cross_cats_sorted":["physics.app-ph","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-11-29T09:53:44Z","title_canon_sha256":"c24a6a1ef8d5951101624d1fde807a86022f1129f8b4fd003c67a59e223a3780"},"schema_version":"1.0","source":{"id":"1711.10749","kind":"arxiv","version":1}},"canonical_sha256":"c60c844b326cba83d2abdad7b350f45114cf51aa3615d2a026f17828b6bd1a1a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c60c844b326cba83d2abdad7b350f45114cf51aa3615d2a026f17828b6bd1a1a","first_computed_at":"2026-05-18T00:29:17.091827Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:17.091827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KX1DaZjZzjFwX6sA3Lkrs69W4L160LpaUFX2WhFaMB1vRa0bo+dHfpJozrQ8RG6X/DqAVEAWbqa2RFlOgMjUBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:17.092294Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.10749","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9931df65650e51e24a148b360c2bf2e1ea0cf57ff252914633466cac13a864e","sha256:9ce2c60f7fcef35b0af6c9e4dde510443f38170ef51941a248aa0bb0b9e075f3"],"state_sha256":"dae5be2ff2d2a7a4e8386371ac9604b30ca140e4336de9b6c2aa2ff00a0219ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CgNUtdEEN3lAWJSn8t8NqvD50vI4M2irRobPMENfsfkRg4X7QfWTBxo9Jg5E99x0Ra1+iU38DMIkFAPF7WwvDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T11:10:33.301230Z","bundle_sha256":"114a1dfc03e1cab8e493e92d58be7aee2f69a1e275a56b0b94b6084363d22754"}}