Measuring absolute spectral radiance using an erbium-doped fiber amplifier

Sanguinetti, Bruno; Guerreiro, Thiago; Monteiro, Filipa; Gisin, Nicolas; Zbinden, Hugo

doi:10.1103/physreva.86.062110

Cited by 7 publications

(11 citation statements)

References 19 publications

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“…Moreover, in this configuration, where just one mode is stimulated N ST is given by N ST = N sN SP (see Ref. [25,26] for more detail), with N s corresponding to the number of photons in the seed field. So, we obtain:…”

Section: Tunable Coherent State Sourcementioning

confidence: 99%

Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications

Bruno

Martin

Thew

2014

Optics Communications

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Quantum optics experiments frequently involve interfering single photons and coherent states. In the case of multi-photon experiments this requires that all photons are frequency degenerate. We report a simple and practical approach to generate coherent states that can be readily tuned to any wavelength required, for example by non-degenerate photon pair creation. We demonstrate this by performing a two-photon (Hong-Ou-Mandel) interference experiment between a coherent state and a pure heralded single photon source. No spectral filtering is required on either source, the coherent state constrained by the pump and seed lasers and the heralded photon exploits non-local filtering. We expect that such an approach can find a wide range of applications in photonic based quantum information science.

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Section: Tunable Coherent State Sourcementioning

confidence: 99%

Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications

Bruno

Martin

Thew

2014

Optics Communications

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“…A method for calibrating SPDs was developed using this source. [ 111,112 ] The uncertainty analysis carried out, accounting for losses due to optical components, back‐reflection, after‐pulses, leads to an estimated relative standard uncertainty in the calibration of an SPAD of 0.73%. [ 112 ]…”

Section: Calibration Methodsmentioning

confidence: 99%

Metrology Perspective of Single‐Photon Detectors: Review on Global Calibration Methods

et al. 2021

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The evolution of quantum standards for SI units and funding support from national governments has led to rapid technological developments in the quantum sciences. With this, new and more powerful quantum optical devices that find applications in several fields are obtained. Single‐photon detectors (SPDs) are considered as a critical element in these emerging technologies. A traceability chain for SPD calibration is required to ensure their performance reliability and quality. Different methods and techniques are being developed worldwide for the calibration of SPDs. In this paper, the developments that have occurred globally in SPD calibration and the uncertainty value achieved until now are summarized along with the scope of possible improvement areas.

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“…In the above system of equations

P_{p}

is the pump power along the fiber,

v_{p}

and

v_{k}

are the phase velocities of the pump and signal,

α_{p}

and

α_{k}

are the fiber (host) linear attenuation coefficients per meter for the pump and signal wavelengths,

P_{k normalf false(normalb false)}

represents the signal powers travelling in forward and backward directions,

g_{p}

and

g_{k}

are the absorption and gain coefficients for the pump and signal per meter,

σ_{e}

and

σ_{a}

are the absorption and emission cross sections of Yb 3 + ions in pm 2 , h is the Planck constant, c is the speed of light in free space,

λ_{p}

and

λ_{k}

are the pump and signal wavelengths, N 0 is the dopant concentration in fiber core, N 1 and N 2 are the populations of the lower and upper states, τ is the upper state life time,

Γ_{p}

and

Γ_{k}

are the unitless pump and signal overlapping factors. The last RHS term in Equation (5) describes the interaction of spontaneous emission with the laser beam, here the normalized Planck emission term over the ASE range is multiplied by a small angle geometrical approximation for the beam [ 26 ] and the presence of

Δ λ

is to consider the division of ASE range to K channels. The parameter values that are used in our simulations can be found in Section 5.…”

Section: The Stimulated Brillouin Scattering (Sbs)mentioning

confidence: 99%

Suppression of the Stimulated Brillouin and Raman Scattering in Actively Q‐switched Fiber Lasers through Temporal Pulse Shaping

et al. 2021

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Despite the wide range of applications and versatility, actively Q‐switched fiber lasers (AQS‐FLs) suffer from the multi‐peak phenomenon or stepwise pulse generation under certain conditions. As such, the advantage of the stepwise tendency in AQS‐FL to modify the pulse shape and create a temporal profile that minimizes the power of stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) Stokes components is taken. Accordingly a multi‐objective genetic algorithm (GA) and a Monte‐Carlo method is developed to solve the improved model for SBS. Additionally, the suppression of SRS is predicted and examined successfully. The proposed method is deployed for the simulation of the 5 and 10 kW peak and 10 ns wide pulses on a 4 m long, single‐mode, ytterbium‐doped double clad fiber under the narrow linewidth of 0.05 nm with promising suppression of SBS and SRS effects. To the best of the authors' knowledge this is the first time that such a pulse‐shaping strategy is demonstrated for the SBS or SRS suppression. Furthermore reaching a 10 kW peak on single mode fibers was previously only possible via custom made fibers. Our novel method offers the possibility of optimizing and improving the utilization of different fiber types in AQS‐FL systems.

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Measuring absolute spectral radiance using an erbium-doped fiber amplifier

Cited by 7 publications

References 19 publications

Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications

Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications

Metrology Perspective of Single‐Photon Detectors: Review on Global Calibration Methods

Suppression of the Stimulated Brillouin and Raman Scattering in Actively Q‐switched Fiber Lasers through Temporal Pulse Shaping

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