Room-Temperature Multi-Beam, Multi-Wavelength Bound States in the Continuum Laser,Advanced Optical Materials

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Room-Temperature Multi-Beam, Multi-Wavelength Bound States in the Continuum Laser
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2022-07-18 , DOI: 10.1002/adom.202200753
Son Tung Ha ₁ , Ramón Paniagua‐Domínguez ₁ , Arseniy I. Kuznetsov ₁

Affiliation

A highly polarized multi-beam, multi-wavelength III–V semiconductor laser based on the concept of bound states in the continuum (BIC) is reported. By utilizing destructive interferences of guided-mode resonances in an active slab supported by a grating structure, both symmetry-protected and accidental BIC resonances are created within the gain spectrum of InGaP multi-quantum wells and achieve lasing in these modes simultaneously. Well-defined multi-lasing beams at different wavelengths (i.e., 664.9 nm @ 0.2°, 656.4 nm @ 2.5°, 646.4 nm @ 5.1°, and 636.7 nm @ 7.6°) with transverse magnetic polarization can be obtained in a single device operating at room temperature. Furthermore, the lasing wavelengths can be precisely tuned by changing the grating parameters. The laser concept presented in this paper is promising for applications in highly directional surface-emitting lasers, optical communications, bio-sensing, and signal processing.

中文翻译：

连续激光中的室温多光束、多波长束缚态

报道了一种基于连续谱束缚态（BIC）概念的高偏振多光束、多波长III-V半导体激光器。通过利用光栅结构支持的有源平板中导模共振的相消干涉，在 InGaP 多量子阱的增益谱内产生对称保护和偶然的 BIC 共振，并同时在这些模式下实现激光发射。具有横向磁极化的不同波长（即 664.9 nm @ 0.2°、656.4 nm @ 2.5°、646.4 nm @ 5.1° 和 636.7 nm @ 7.6°）的明确定义的多激光束可以在单个设备操作中获得在室温下。此外，可以通过改变光栅参数来精确调谐激光波长。

更新日期：2022-07-18

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