28 lines
1.3 KiB
Matlab
28 lines
1.3 KiB
Matlab
function ret = accelerationDueToPushBeam(this, PositionVector, VelocityVector)
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% is the distance between the chamber center and the cross point of push beam and z-axis (along the gravity)
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WaveVectorEndPoint = [0, 1, this.DistanceBetweenPushBeamAnd3DMOTCenter/this.PushBeamDistance];
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WaveVectorEndPoint = WaveVectorEndPoint./norm(WaveVectorEndPoint);
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Origin=[0,0,0];
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SaturationIntensity = this.calculateLocalSaturationIntensity(this.PushBeamSaturationParameter, PositionVector, Origin, WaveVectorEndPoint, this.PushBeamRadius, this.PushBeamWaist);
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DopplerShift = dot(WaveVectorEndPoint(:), VelocityVector) * this.PushBeamWaveNumber;
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Detuning = this.PushBeamDetuning - DopplerShift;
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s_push = SaturationIntensity/(1 + SaturationIntensity + (4 * (Detuning./this.PushBeamLinewidth).^2));
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a_sat = (Helper.PhysicsConstants.PlanckConstantReduced * this.PushBeamWaveNumber * WaveVectorEndPoint(:)/Helper.PhysicsConstants.Dy164Mass).*(this.PushBeamLinewidth * 0.5);
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a_push = a_sat .* (s_push/(1+s_push));
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if this.SpontaneousEmission
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a_scatter = this.accelerationDueToSpontaneousEmissionProcess(s_push, s_push, this.PushBeamLinewidth, this.PushBeamWaveNumber);
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else
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a_scatter = [0,0,0];
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end
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a_total = a_push + a_scatter;
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ret = a_total(1:3);
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end
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