Nanolasers: Second-order intensity correlation, direct modulation and electromagnetic isolation in array architectures

Pan, Si; Deka, Suruj S.; Amili, Abdelkrim El; Gu, Qing; Fainman, Yeshaiahu

doi:10.1016/j.pquantelec.2018.05.001

Cited by 24 publications

(24 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This form of strong confinement of higherorder modes has been previously reported in microcavities [32,54]. Pan et al [55] demonstrate this behavior for the same dual metallo-dielectric nanolaser system first presented in a study by Deka et al [35]. Figure 4B depicts their results, where the difference between the Q-factors -ΔQfor the coupled mode for two different intercavity distances (d = 100 and 0 nm) are plotted as a function of the cavity radius.…”

Section: Cross Talk Isolationsupporting

confidence: 72%

Nanolaser arrays: toward application-driven dense integration

et al. 2020

Self Cite

View full text Add to dashboard Cite

The past two decades have seen widespread efforts being directed toward the development of nanoscale lasers. A plethora of studies on single such emitters have helped demonstrate their advantageous characteristics such as ultrasmall footprints, low power consumption, and room-temperature operation. Leveraging knowledge about single nanolasers, the next phase of nanolaser technology will be geared toward scaling up design to form arrays for important applications. In this review, we discuss recent progress on the development of such array architectures of nanolasers. We focus on valuable attributes and phenomena realized due to unique array designs that may help enable real-world, practical applications. Arrays consisting of exactly two nanolasers are first introduced since they can serve as a building block toward comprehending the behavior of larger lattices. These larger-sized lattices can be distinguished depending on whether or not their constituent elements are coupled to one another in some form. While uncoupled arrays are suitable for applications such as imaging, biosensing, and even cryptography, coupling in arrays allows control over many aspects of the emission behavior such as beam directionality, mode switching, and orbital angular momentum. We conclude by discussing some important future directions involving nanolaser arrays.

show abstract

Section: Cross Talk Isolationsupporting

confidence: 72%

Nanolaser arrays: toward application-driven dense integration

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here we present a model for a large collection of incoherently pumped twolevel emitters in a cavity and show that CRS can occur in this system. Our model is relevant for nanolasers and -LEDs, which have gained much interest in recent years [14][15][16] as ideal candidates for integrated light emitters for optical interconnects [15] and on-chip optical circuits [16]. We find a condition for strong coupling and collective eigenmode splitting equivalent to that in [8][9][10][11], but identify a separate condition for the optical emission spectrum to exhibit two peaks.…”

mentioning

confidence: 82%

On collective Rabi splitting in nanolasers and nano-LEDs

et al. 2019

View full text Add to dashboard Cite

We analytically calculate the optical emission spectrum of nanolasers and nano-LEDs based on a model of many incoherently pumped two-level emitters in a cavity. At low pump rates we find two peaks in the spectrum for large coupling strengths and numbers of emitters. We interpret the double-peaked spectrum as a signature of collective Rabi splitting, and discuss the difference between the splitting of the spectrum and the existence of two eigenmodes. We show that an LED will never exhibit a split spectrum, even though it can have distinct eigenmodes. For systems where the splitting is possible we show that the two peaks merge into a single one when the pump rate is increased. Finally, we compute the linewidth of the systems, and discuss the influence of inter-emitter correlations on the lineshape.

show abstract

“…However, many of the NLs studied did not demonstrate clear kinks in their threshold curves despite displaying other characteristics of lasing, including PL clamping, narrow lasing modes and spatially coherent emission within the spectra and imaging. This finding suggests that these lasers may have high spontaneous emission factors (β) 23 , which reflects the optical efficiency of the structures. Reports in the literature for multiple quantum well NLs have modelled β values of 0.03 at room temperature 13 .…”

Section: Large-scale Power-dependent μ-Pl Characterisationmentioning

confidence: 94%

Heterostructure and Q-factor engineering for low-threshold and persistent nanowire lasing

et al. 2020

View full text Add to dashboard Cite

Continuous room temperature nanowire lasing from silicon-integrated optoelectronic elements requires careful optimisation of both the lasing cavity Q-factor and population inversion conditions. We apply time-gated optical interferometry to the lasing emission from high-quality GaAsP/GaAs quantum well nanowire laser structures, revealing high Q-factors of 1250 ± 90 corresponding to end-facet reflectivities of R = 0.73 ± 0.02. By using optimised direct-indirect band alignment in the active region, we demonstrate a well-refilling mechanism providing a quasifour-level system leading to multi-nanosecond lasing and record low room temperature lasing thresholds (~6 μJ cm −2 pulse −1) for III-V nanowire lasers. Our findings demonstrate a highly promising new route towards continuously operating silicon-integrated nanolaser elements.

show abstract

Nanolasers: Second-order intensity correlation, direct modulation and electromagnetic isolation in array architectures

Cited by 24 publications

References 69 publications

Nanolaser arrays: toward application-driven dense integration

Nanolaser arrays: toward application-driven dense integration

On collective Rabi splitting in nanolasers and nano-LEDs

Heterostructure and Q-factor engineering for low-threshold and persistent nanowire lasing

Contact Info

Product

Resources

About