Spectral characteristics of external-cavity controlled semiconductor lasers

Fleming, Mark W.; Mooradian, A.

doi:10.1109/jqe.1981.1070634

Cited by 323 publications

(82 citation statements)

References 48 publications

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“…For that reason, in the majority of applications, great care is taken to coat the laser facets with anti-reflection coating, and to place optical isolators as close to the cavity as possible; but as controlled feedback can improve certain laser parameters, it has been extensively studied. Depending on specific conditions, optical feedback has been shown to make the laser multi-stable, have hysteresis phenomena, enhance, prolong or suppress the relaxation oscillation in the transient output, improve the laser's performance through noise suppression, reduce nonlinear distortion and modulation bandwidth enhancement, and, what is most relevant for our application, improve the laser linewidth [26][27][28][29][30][31].…”

Section: Utilizing Delayed On-chip Optical Feedbackmentioning

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 Delayed On-chip Optical Feedbackmentioning

confidence: 99%

Widely-Tunable Ring-Resonator Semiconductor Lasers

et al. 2017

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“…The standard approach is to use a diffraction grating and an actuator to either change the grating angle, in the Littrow configuration [6], or to change the angle of light reflected back on the grating, in the Littman configuration [7]. In both cases, when the axis of mechanical motion is perpendicular to the grating [8]- [9].…”

Section: Introductionmentioning

confidence: 99%

Fast tunable blazed MEMS grating for external cavity lasers

Tormen

Niedermann

Hoogerwerf

et al. 2017

International Conference on Space Optics — ICSO 2006

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“…1 Since the cavity of a laser diode ͑LD͒ is compact and susceptible to the external cavity, it is favorable for use as a gain medium. 2 In particular, if an output facet of the LD is processed with an antireflection ͑AR͒ coating, the LD is strongly coupled to the external cavity. [3][4][5] Tiziani, Franze, and Haible proposed a Littman-cavity-based light source that provided a continuous wavelength tuning range of 25 nm by using an ARcoated LD.…”

Section: Introductionmentioning

confidence: 99%