Control of emitted light polarization in a 1310 nm dilute nitride spin-vertical cavity surface emitting laser subject to circularly polarized optical injection

Alharthi, Sami S.; Hurtado, Antonio; Al-Seyab, R.; Korpijärvi, Ville-Markus; Guina, Mircea; Henning, I.D.; Adams, M.J.

doi:10.1063/1.4901192

Cited by 21 publications

(7 citation statements)

References 43 publications

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“…We have calculated the top and bottom mirror reflectivities as 99.6% and 99.8% respectively. The design is very similar to that described in [4], [7], [30], [31] except that it is has an additional two pairs of top layers.…”

Section: Experimental Set Upmentioning

confidence: 99%

“…The sample used here is the same design as that previously reported in [4], [7], [30], [31] but with the addition of two mirror pairs. In practice this did not result in any significant changes in measured output-pump characteristics; therefore we used values we calculated in [4] of κ (68.5 ns −1 ) and the scaling above threshold of the pump rate η to the pump rate P/P th (143%).…”

Section: A Solitary Spin Vcselmentioning

confidence: 99%

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Polarization Responses of a Solitary and Optically Injected Vertical Cavity Spin Laser

Cemlyn

Henning

Adams

et al. 2019

IEEE J. Quantum Electron.

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The polarisation properties of a quantum well spin-vertical cavity surface emitting laser (spin-VCSEL), both without injection and with variable polarisation optical injection, are investigated experimentally and compared with the spin flip model (SFM). Without injection, we demonstrate two distinct types of VCSEL-pump response depending on the signs of the linewidth enhancement factor, birefringence and dichroism: firstly where the pump and VCSEL have the same sign of the ellipticity, and secondly where the VCSEL ellipticity, accompanied by the linear polarisation, switches sign. We show that by controlling the injected power, ellipticity or linear angle, near circular polarisation can be obtained. These responses both give insight into the electro-optical injected spin-VCSEL system, and have practical implications for the use of spin VCSELs in unique applications exploiting the ellipticity degree of freedom.

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Section: Experimental Set Upmentioning

confidence: 99%

Section: A Solitary Spin Vcselmentioning

confidence: 99%

Polarization Responses of a Solitary and Optically Injected Vertical Cavity Spin Laser

Cemlyn

Henning

Adams

et al. 2019

IEEE J. Quantum Electron.

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“…Earlier experimental and theoretical studies on spin VCSELs have been focused on their steady-state operation [3,7,10,[13][14][15][16][17][18][19]. For example, using optical pumping, switching in the output polarization between two opposite polarization states, i.e., left circularly polarized (LCP) and right circularly polarized (RCP), can be controlled via the pump polarization.…”

Section: Introductionmentioning

confidence: 99%

Stability and bifurcation analysis of spin-polarized vertical-cavity surface-emitting lasers

Susanto

Cemlyn

et al. 2017

Phys. Rev. A

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A detailed stability and bifurcation analysis of spin-polarized vertical-cavity surface-emitting lasers (VCSELs) is presented. We consider both steady-state and dynamical regimes. In the case of steady-state operation, we carry out a small-signal (asymptotic) stability analysis of the steady-state solutions for a representative set of spin-VCSEL parameters. Compared with full numerical simulation, we show this produces surprisingly accurate results over the whole range of pump ellipticity, and spin-VCSEL bias up to 1.5 times the threshold. We then combine direct numerical integration of the extended spin-flip model and standard continuation technique to examine the underlying dynamics. We find that the spin VCSEL undergoes a period-doubling or quasiperiodic route to chaos as either the pump magnitude or polarization ellipticity is varied. Moreover, we find that different dynamical states can coexist in a finite interval of pump intensity, and observe a hysteresis loop whose width is tunable via the pump polarization. Finally we report a comparison of stability maps in the plane of the pump polarization against pump magnitude produced by categorizing the dynamic output of a spin VCSEL from time-domain simulations, against supercritical bifurcation curves obtained by the standard continuation package AUTO. This helps us better understand the underlying dynamics of the spin VCSELs.

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“…1 shows a well-known feature of spinVCSELs whereby its output polarization (e) is determined by that of the optical pump; 13 then, as the injected optical power is continuously increased the ML switches the SL's light polarization gradually from almost RCP (e ¼ 0.75) to almost LCP (e ¼ À0.95), a behavior that has been recently theoretically 50,51 and experimentally reported. 49,50 Fig . 1 shows that by changing the initial wavelength detuning from zero to À0.50 nm the lower the negative initial wavelength detuning, the more injection power is needed to achieve the nonlinear gradual PS transition.…”

mentioning

confidence: 90%

“…46,47 Moreover, very recently, we have reported the first investigation of an optically injected dilute nitride spin-VCSEL emitting at the very important telecom wavelength of 1300 nm and operating at room temperature. 49,50 In that work, the control of the emitted polarization by the optically injected signal was experimentally and theoretically demonstrated.…”

mentioning

confidence: 99%

Circular polarization switching and bistability in an optically injected 1300 nm spin-vertical cavity surface emitting laser

Alharthi

Hurtado

Korpijärvi

et al. 2015

Applied Physics Letters

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We report the experimental observation of circular polarization switching (PS) and polarization bistability (PB) in a 1300 nm dilute nitride spin-vertical cavity surface emitting laser (VCSEL). We demonstrate that the circularly polarized optical signal at 1300 nm can gradually or abruptly switch the polarization ellipticity of the spin-VCSEL from right-to-left circular polarization and vice versa. Moreover, different forms of PS and PB between right- and left-circular polarizations are observed by controlling the injection strength and the initial wavelength detuning. These results obtained at the telecom wavelength of 1300 nm open the door for novel uses of spin-VCSELs in polarization sensitive applications in future optical systems.

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Control of emitted light polarization in a 1310 nm dilute nitride spin-vertical cavity surface emitting laser subject to circularly polarized optical injection

Cited by 21 publications

References 43 publications

Polarization Responses of a Solitary and Optically Injected Vertical Cavity Spin Laser

Polarization Responses of a Solitary and Optically Injected Vertical Cavity Spin Laser

Stability and bifurcation analysis of spin-polarized vertical-cavity surface-emitting lasers

Circular polarization switching and bistability in an optically injected 1300 nm spin-vertical cavity surface emitting laser

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