Lab 4

Lab 4 - Distance From The Laser Table 6 items Figure 2...

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Randall Robert (9771) Jacob Porta (7090) Optical Electronics Lab EE 4270 Experiment 4 Laser Beam Propagation Tuesday; September 20, 2005

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Introduction: In this lab we will follow a detailed procedure which will allow us to accurately measure the width of a laser beam. Figure 1: Assemble the components as shown in figure one and take the following measurements. ] [ 131 . 1 ] [ 3 60 2 )) 2 (cos( 2 2 ) 2 sin( max V V mm A Hz f fA d dx V ft fA d dx V p p A ft A x MAX = = = = = = = - = = π τ Distance [cm] Voltage [mV] 2 1 e [mV] τ[μs] Laser Diameter [m] 3 80.8 10.504 490 0.000554 8 77.6 10.088 500 0.000565 13 73.6 9.568 560 0.000633 18 67.2 8.736 650 0.000735 23 61.6 8.008 680 0.000769 28 56.0 7.280 760 0.000860
X Y 2.4 3.6 4.8 6 7.2 8.4 9.6 10.8 12 13.2 14.4 15.6 16.8 18 19.2 20.4 21.6 22.8 24 25.2 26.4 27.6 558 576 594 612 630 648 666 684 702 720 738 756 774 792 810 828 846 864 882 900 Laser Diameter Laser Diameter As A Function Of The Distance From The Laser

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Unformatted text preview: Distance From The Laser Table: 6 items Figure 2: Assemble the components shown in figure with the lens at a point which the laser beam is approximately 1[mm], and repeat the process at a distance which the laser beam is approximately 2[mm]. The first measurement was taken with the positive lens at 13[cm] away from the laser. The vibrator was placed 67[mm] away from the positive lens. V=150[mV] 150[mV](13.0%)=19.5[mV] τ=150[μs] Diameter=181 [μm] The next measurement was taken with the positive lens 23[mm] away from the laser. The vibrator was placed 67[mm] away from the positive lens. V=162[mV] 162[mV](13.0%)=21.06[mV] τ=152[μs] Diameter=172 [μm]...
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Lab 4 - Distance From The Laser Table 6 items Figure 2...

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