Diploma thesis

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kcounts / second 80 70 60 50 40 30 20 10 Gating width: 5 ns Detector efficiency 20% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] A.3.3 1555 nm cw laser kcounts / second 1800 1600 1400 1200 1000 800 600 400 200 Gating width: 5 ns Detector efficiency 25% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] The laser beam has been emitted from a LFO-18-ip laser diode. It is based on the Mitsubishi 1555nm MQW InGaAs/InP Fabry-Perot laser diode and coupled to a single mode fiber by Roitner GmbH. kcounts / second kcounts / second 112 Gating width: 2.5 ns Detector efficiency 10% 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] Gating width: 2.5 ns Detector efficiency 20% 400 350 300 250 200 150 100 50 Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] kcounts / second kcounts / second Gating width: 2.5 ns Detector efficiency 15% 140 120 100 80 60 40 20 Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 800 700 600 500 400 300 200 100 trigger frequency [MHz] Gating width: 2.5 ns Detector efficiency 25% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz]
kcounts / second kcounts / second 350 300 250 200 150 100 50 Gating width: 5 ns Detector efficiency 10% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 1600 1400 1200 1000 800 600 400 200 trigger frequency [MHz] Gating width: 5 ns Detector efficiency 20% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] A.3.4 808 nm pulsed laser kcounts / second kcounts / second 800 700 600 500 400 300 200 100 Gating width: 5 ns Detector efficiency 15% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2000 1800 1600 1400 1200 1000 800 600 400 200 trigger frequency [MHz] Gating width: 5 ns Detector efficiency 25% Deadtime: 0 µs Deadtime: 1 µs Deadtime: 2 µs Deadtime: 5 µs Deadtime: 10 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] The laser beam has been emitted by the PicoQuant LDH-P-C-810 laser system. kcounts per second 180 160 140 120 100 80 60 40 20 808nm pulsed laser 1nW, Width: 2.5 ns Probability: 10%, Deadtime: 0 µs Probability: 10% ,Deadtime: 1 µs Probability: 10% ,Deadtime: 2 µs Probability: 25%, Deadtime: 0 µs Probability: 25%, Deadtime: 1 µs Probability: 25%, Deadtime: 2 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] kcounts per second 1800 1600 1400 1200 1000 800 600 400 200 808nm pulsed laser 1nW, Width: 5 ns Probability: 10%, Deadtime: 0 µs Probability: 10% ,Deadtime: 1 µs Probability: 10% ,Deadtime: 2 µs Probability: 25%, Deadtime: 0 µs Probability: 25%, Deadtime: 1 µs Probability: 25%, Deadtime: 2 µs 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 trigger frequency [MHz] 113
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Towards a pure heralded single phot
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ii A.2 id201 programming . . . . .
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Chapter 1. Overview 2
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experimental data. This thesis is d
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a nonlinear, nonmagnetic material,
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Figure 3.3: Parametric down convers
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For the volume integration, we rest
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Figure 3.5: 1D square-wave periodic
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and 3.10). Figure 3.9: 0-0 waveguid
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By inserting the corresponding term
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Λi phasematching Λs Figure 3.18:
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pump mode → signal mode + idler m
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Hence, we have to ensure a separabl
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3.2.2 Frequency entanglement of two
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3.3 Generating pure heralded single
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Material: KTP Polarizations: y →
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Material: KTP Polarizations: y →
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32 Ωi�PHz� 1.26 1.23 1.2 Φ
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The first appealing feature of coun
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Ωi�PHz� 0.10 0.05 1.22 1.215
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38 Figure 3.53: Different pump freq
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4 Experiment 4.1 Avalanche photodio
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kcounts / second 0.14 0.12 0.1 0.08
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kcounts per second 180 160 140 120
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or z-polarization, and we are left
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Gaussian functions. The result is a
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that the phasematching point was sh
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this two dimension plane on the bla
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plotted in Appendix A.4.3. Shg powe
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kSHG(762.5nm) 14.5506/ µm kp1(1525
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kSHG(762.5nm) 14.2703/ µm kp1(1525
Page 65 and 66: Outlook measurement signal counts/s
Page 67: This is the silliest stuff that eve
Page 70 and 71: �� pdc package Ver: 1.0 Main pa
Page 72 and 73: �� this is a list of all variab
Page 74 and 75: ��refracrtive index of the o�
Page 76 and 77: ��Begin: Sellmeier Equations fo
Page 78 and 79: optnp�getOpt�np,opts,defaults
Page 80 and 81: ��joint spectral amplitude with
Page 82 and 83: findRootdk2�opts��:�f
Page 84 and 85: ��self written assert package
Page 86 and 87: 2 myUnits.m �� 10^�11 ��
Page 88 and 89: 2 enhancedSellmeier.m ��Print
Page 90 and 91: 4 enhancedSellmeier.m iassert�opt
Page 92 and 93: 6 enhancedSellmeier.m ��extract
Page 94 and 95: 8 enhancedSellmeier.m opte � ToEx
Page 96 and 97: 10 enhancedSellmeier.m ��refrac
Page 98 and 99: 12 enhancedSellmeier.m iassert�op
Page 100 and 101: 14 enhancedSellmeier.m If�optairB
Page 102 and 103: 2 wmschmidt.m compact carrier �0,
Page 104 and 105: A.2 id201 programming The data acqu
Page 106 and 107: ��
Page 108 and 109: (EXIM LSQI EGLVMWX 0EFSV MH MH ûMH
Page 110 and 111: (EXIM LSQI EGLVMWX 0EFSV MH MH ûMH
Page 112 and 113: (EXIM LSQI EGLVMWX 0EFSV MH MH û T
Page 114 and 115: kcounts / second kcounts / second k
Page 118 and 119: kcounts per second kcounts per seco
Page 120 and 121: E y E y -> E y E y E y -> E z E y E
Page 122 and 123: BCT0703-B12 second measurement The
Page 124 and 125: Shg power Pump power [a.u.] Shg pow
Page 126 and 127: Shg power Pump power [a.u.] 90 80 7
Page 132 and 133: ITI0706-B124 power measurement The
Page 134 and 135: Bibliography [1] H. J. Kimble, M. D
Page 136 and 137: [25] Carlot Canalias and Valdas Pas
Page 138 and 139: Thanks ❏ To Dr. Christine Silberh
Page 140: Erklärung Gemäß §31(2) der Dipl
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