Lab 5 - Demo Lab 5 Katie Bredice Wednesday Section Henry...

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Demo Lab 5 Katie Bredice Wednesday Section Henry Wen Titanium-Sapphire Laser 28 November 2007
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In this lab we demonstrated the use of an infrared Ti:sapphire laser. Explore the properties of single mode fibers. Titanium-sapphire refers to the lasing medium, a crystal of sapphire (Al 2 O 3 ) doped with titanium ions for the correct amount of energy. In this lab, the output power of the laser was measured with variable pump power. 1. See attached sheet. There is light coming off of it that is a bad thing because the light that is coming at us from the side is not getting to the right place and it’s lost. The lens focuses the light into a small point. Light comes in bounces down, goes through mirror and hits crystal. 2. Output between 488nm and 514nm mixture between blue and green light. Power - 6.4 watts 3. Tunable between 650nm – 1100nm
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Unformatted text preview: 4. An output power of 410 milliwatts was achieved. 5. Efficiency in general in Ti:sapphire laser is excellent. In our case, Efficiency is the fraction of power being supplied to the laser (ie the pump power) that is being converted into output power (ie the output of the laser). This is Power(out)/Power(in). 6. The advantages of the Ti:sapphire laser over the dye laser are great convenience, more stable operation and tunability. The Ti:sapphire laser can operate with changes of optics to cover the spectral region from 680 nm to 1100 nm, however, dye lasers typically need four different dyes in this region. Input vs Outpu 3 20 42 62 90 140 175 240 270 320 360 390 50 100 150 200 250 300 350 400 450 3.6 3.8 4 4.2 4.4 4.8 5 5.4 5.6 5.8 6 6.2 Input (W)...
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  • Winter '05
  • output power, Katie Bredice, Henry Wen, Section Henry Wen

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