1 W Single-Mode Large-Area Edge-Emitting Laser via Non-Hermitian Spatial Mode Filtering
LASER & PHOTONICS REVIEWS, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/lpor.71502
- Dergi Adı: LASER & PHOTONICS REVIEWS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
We experimentally demonstrate that non-Hermitian spatial mode filtering enables single-mode operation in an electrically pumped, large-area edge-emitting laser diode that would otherwise support multiple transverse modes. The resulting device achieves 1 W output power while maintaining near-diffraction-limited beam quality. The proposed design extends our previous quasi-parity-time-symmetric (q-PTS) architecture by implementing a symmetric, two-sided filter array, which strengthens discrimination against higher-order modes while preserving the integrity and gain of the fundamental mode. The device exhibits near- and far-field emission profiles with exceptional beam quality, as confirmed by M2 1.2, and meets the 1 W single-mode benchmark for optical pumping, sensing, and optical links. This work bridges theoretical advances in non-Hermitian photonics with scalable, fabrication-compatible strategies for high-brightness semiconductor lasers.