Optical Negative Feedback for Linewidth Reduction of Semiconductor Lasers

Aoyama, Konosuke; Yoshioka, Ryuichi; Yokota, Nobuhide; Kobayashi, Wataru; Yasaka, Hiroshi

doi:10.1109/lpt.2014.2371074

Cited by 23 publications

(11 citation statements)

References 12 publications

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“…This has been typically done with Fabry-Perot cavities that were free-space coupled to semiconductor lasers [36,37]. The use of a separate cavity for feedback breaks the limitation, as one can engineer the cavity to have the FSR larger than ω R , keeping the laser stable with large effective bandwidth, and offering narrow linewidth due to increased photon lifetime inside the cavity.…”

Section: Utilizing On-chip High-q Resonatormentioning

confidence: 99%

Widely-Tunable Ring-Resonator Semiconductor Lasers

et al. 2017

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Chip-scale widely-tunable lasers are important for both communication and sensing applications. They have a number of advantages, such as size, weight, and cost compared to mechanically tuned counterparts. Furthermore, they allow for integration in more complex integrated photonic chips to realize added functionality. Here we give an extensive overview of such lasers realized by utilizing ring resonators inside the laser cavity. Use of ring resonators for tuning allows for wide-tunability by exploiting the Vernier effect, and at the same time improves the laser linewidth, as effective cavity length is increased at ring resonance. In this review, we briefly introduce basic concepts of laser tuning using ring resonators. Then, we study a number of laser cavity configurations that utilize two ring resonators, and compare their tuning performance. We introduce a third ring resonator to the laser cavity, study three different cavity configurations utilizing three ring resonators, and select the optimal one, for which we show that laser tuning is straightforward, provided there are monitor photodetectors on-chip. Finally, we give a literature overview showing superior linewidth performance of ring-based widely-tunable lasers.

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Section: Utilizing On-chip High-q Resonatormentioning

confidence: 99%

Widely-Tunable Ring-Resonator Semiconductor Lasers

et al. 2017

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“…Its noise level is 5 and 3 orders of magnitude lower than that of conventional DFB lasers and external cavity lasers, respectively. From 2015 to 2018, Aoyama team [65,66] of Tohuku University proposed a coherent optical negative feedback method to reduce the linewidth of single-mode semiconductor lasers. The linewidth of the laser was optimized from 13.5 MHz to 3 kHz by using external cavity negative feedback lenses.…”

Section: External Cavity Waveguide Feedback Semiconductor Lasermentioning

confidence: 99%

Advances in narrow linewidth diode lasers

Lang

Jia

Chen

et al. 2019

Sci. China Inf. Sci.

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“…随后, 德国 FBH 研究所 [3] 提出利用 DFB 激光芯片与集成式共焦法布里 -珀罗腔谐振器等组成共振反馈谐振腔, 实现功率为 50 mW, 洛伦兹线宽仅 15.7 Hz, 同时获得超低噪声 (白噪声等级 5 Hz 2 /Hz) 输出, 其噪声水平比普通 DFB 激光器和外腔激光器分别低了 5 个和 3 个数量级. 2015∼2018 年, 日本东北大学 Konosuke Aoyama 团队 [65,66] 提出一种相干光学负反馈方法降低单模半导体激光器线宽, 利用外腔负反馈镜片将激光器线宽由 13.5 MHz 优化为 3 kHz, 频率调制 (FM) 噪声的能量密度降低 35 dB, 同时相对强度噪声低于 −140 dB/Hz, 该系统可以保持窄线宽稳定输出超过一小时.…”

Section: 外腔光栅反馈半导体激光器unclassified

Advances in narrow linewidth diode lasers

SHAN¹,

Chen²,

LANG³

et al. 2019

Sci. Sin.-Inf.

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The era of smart travel has arrived, and the need for high precision lidar detection technology is increasing. With the advantages of high resolution, a strong anti-active jamming ability, small volume, light weight, and low cost, new solid-state lidars can meet the requirements of intelligent cars in the future. A narrow linewidth diode laser is an ideal light source of solid-state lidars. The progress and development of narrow linewidth diode laser techniques can greatly improve the application of solid-state lidars. In this paper, the technology and development is described in detail. In addition, the design ideas, key fabrication technologies, and optical characteristics of various narrow linewidth diode lasers are analyzed and discussed. Finally, the developments of narrow linewidth diode lasers are proposed.

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Optical Negative Feedback for Linewidth Reduction of Semiconductor Lasers

Cited by 23 publications

References 12 publications

Widely-Tunable Ring-Resonator Semiconductor Lasers

Widely-Tunable Ring-Resonator Semiconductor Lasers

Advances in narrow linewidth diode lasers

Advances in narrow linewidth diode lasers

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