{"doi":"10.1364/oe.391650","title":"Plasmon-assisted random lasing from a single-mode fiber tip","abstract":"Random lasing occurs as the result of a coherent optical feedback from multiple scattering centers. Here, we demonstrate that plasmonic gold nanostars are efficient light scattering centers, exhibiting strong field enhancement at their nanotips, which assists a very narrow bandwidth and highly amplified coherent random lasing with a low lasing threshold. First, by embedding plasmonic gold nanostars in a rhodamine 6G dye gain medium, we observe a series of very narrow random lasing peaks with full-width at half-maximum ∼ 0.8 nm. In contrast, free rhodamine 6G dye molecules exhibit only a single amplified spontaneous emission peak with a broader linewidth of 6 nm. The lasing threshold for the dye with gold nanostars is two times lower than that for a free dye. Furthermore, by coating the tip of a single-mode optical fiber with gold nanostars, we demonstrate a collection of random lasing signal through the fiber that can be easily guided and analyzed. Time-resolved measurements show a significant increase in the emission rate above the lasing threshold, indicating a stimulated emission process. Our study provides a method for generating random lasing in the nanoscale with low threshold values that can be easily collected and guided, which promise a range of potential applications in remote sensing, information processing, and on-chip coherent light sources.","journal":"Optics Express","year":2020,"id":85195,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":7,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9572,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":436046,"name":"Ying Li","orcid":"0000-0002-3804-4004","position":1,"is_corresponding":false},{"id":436971,"name":"Jiyang Chen","orcid":null,"position":2,"is_corresponding":false},{"id":436972,"name":"Anna Elizabeth Stocks","orcid":null,"position":3,"is_corresponding":false},{"id":298321,"name":"Elyahb Allie Kwizera","orcid":"0000-0003-2700-8128","position":4,"is_corresponding":false},{"id":298325,"name":"Xiaohua Huang","orcid":"0000-0001-6265-3400","position":5,"is_corresponding":false},{"id":436047,"name":"Christos Argyropoulos","orcid":"0000-0002-8481-8648","position":6,"is_corresponding":false},{"id":436048,"name":"Thang B. Hoang","orcid":"0000-0001-6438-112X","position":7,"is_corresponding":false},{"id":436970,"name":"Dipendra Khatri","orcid":null,"position":0,"is_corresponding":true}],"reference_count":32,"raw_metadata":null,"created_at":"2026-07-18T21:56:02.794896Z","pmid":"32549465","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}