Difference between revisions of "Laser Images"

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I took the segments of wave guide that I had examined under microscope and exposed them to a green laser pointer with very little ambient light.  The laser illuminated the wave guide and revealed the effects of surface damage.  Areas with fissures, dust, or residue sparkled under the green light.  This indicates significant light loss.  Understanding light loss is key to the success of the tagger microscope.
 
I took the segments of wave guide that I had examined under microscope and exposed them to a green laser pointer with very little ambient light.  The laser illuminated the wave guide and revealed the effects of surface damage.  Areas with fissures, dust, or residue sparkled under the green light.  This indicates significant light loss.  Understanding light loss is key to the success of the tagger microscope.
  
[[ File:Cropped Used WG Loss LengthwiseDSC 0169.JPG |thumb|center|The effect of many surface imperfections becomes obvious when looking at a length of illuminated light guide. (Previously processed light guide. MFR: Saint Gobain BCF-98)]]
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[[ File:Cropped Used WG Loss LengthwiseDSC 0169.JPG |thumb|center|Figure 1: The effect of many surface imperfections becomes obvious when looking at a length of illuminated light guide. (Previously processed light guide. MFR: Saint Gobain BCF-98)]]
  
 
==Surface Imperfections==
 
==Surface Imperfections==
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Details of the damage are visible in these pictures.   
 
Details of the damage are visible in these pictures.   
  
Figure : In the upper right-hand third of the image are two parallel bands outlining a section of wave guide that seems brighter.  This corresponds to the glue residue from the sticky labeling system. Other damage can also be seen.
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Figure 2: In the upper right-hand third of the image are two parallel bands outlining a section of wave guide that seems brighter.  This corresponds to the glue residue from the sticky labeling system. Other damage can also be seen.
[[File:Cropped Used Surface imperfections 1 DSC 0200 (2).JPG ‎|thumb|left| Detailed surface imperfections in previously processed light guide. (MFR: Saint Gobain BCF-98)]]
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[[File:Cropped Used Surface imperfections 1 DSC 0200 (2).JPG ‎|thumb|left| Figure 2: Detailed surface imperfections in previously processed light guide. (MFR: Saint Gobain BCF-98)]]
  
Figure : Nicks, gouges, and residues coat the length of the fiber, causing light loss everywhere.
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Figure 3: Nicks, gouges, and residues coat the length of the fiber, causing light loss everywhere.
[[File:Cropped Used surface imperfect 2 DSC 0201.JPG |thumb| Surface imperfections in previously processed light guide. (MFR Saint Gobain; BCF-98)]]
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[[File:Cropped Used surface imperfect 2 DSC 0201.JPG |thumb| Figure 3: Surface imperfections in previously processed light guide. (MFR Saint Gobain; BCF-98)]]
  
 
=New Fibers=
 
=New Fibers=

Revision as of 06:25, 28 December 2015

Used Fibers

Light Loss Along Length

I took the segments of wave guide that I had examined under microscope and exposed them to a green laser pointer with very little ambient light. The laser illuminated the wave guide and revealed the effects of surface damage. Areas with fissures, dust, or residue sparkled under the green light. This indicates significant light loss. Understanding light loss is key to the success of the tagger microscope.

Figure 1: The effect of many surface imperfections becomes obvious when looking at a length of illuminated light guide. (Previously processed light guide. MFR: Saint Gobain BCF-98)

Surface Imperfections

Details of the damage are visible in these pictures.

Figure 2: In the upper right-hand third of the image are two parallel bands outlining a section of wave guide that seems brighter. This corresponds to the glue residue from the sticky labeling system. Other damage can also be seen.

Figure 2: Detailed surface imperfections in previously processed light guide. (MFR: Saint Gobain BCF-98)

Figure 3: Nicks, gouges, and residues coat the length of the fiber, causing light loss everywhere.

Figure 3: Surface imperfections in previously processed light guide. (MFR Saint Gobain; BCF-98)

New Fibers

Clarity

Freshly cut light guide demonstrates remarkable clarity and minimal light loss. These images illustrate the smoothness of an undamaged surface.

Figure 1: Light Guide recently cut from spool shows exceptional clarity under laser light. (MFR Saint Gobain BCF-98)


Figure 3: Polished end of light guide away from light source, recently cut from spool. Long exposure reveals minimal light loss relative to end. (MFR Saint Gobain BCF-98)
Figure 2: Top view of light guide recently cut from spool. Uniform brightness indicates few surface abnormalities. (MFR Saint Gobain BCF-98)

Damage from Clamp

Fast Shutter Clamp Damage DSC 0368.JPG
Cropped DSC 0059.JPG
Cropped detail clamp damage DSC 0061.JPG

Other Surface Imperfections

‎ Minimal surface imperfections visible near end of new light guide.
‎ Imperfections along edge in new light guide.
‎ Two sides of the wave guide are visible and minimal light loss is observed. Bright region due to laser angle.