You helped already a lot!
- as much light as possible should reach the sample, but also we need to position the electrode precisely. But it is possible only to move the sample and the electrode is static. Right now the adapter (fiber to glass capillary) i have works for my case and i can...
Thank you all for your answers and ideas!
Yes, i think some people did that already where the inner core is the actual fiber and then coated with a metal which works as an ring electrode (then insulation again...). However the size of the fiber limits the size of the electrode and right now i...
I tried to make a cone shape at the end while melting the glass but was not successful in a quick approach as the glass cools down very fast and it tends to bend while heating....
with the clear epoxy was also one of my ideas, i filled a capillary and will check when its hardened.
As far as i...
Unfortunately i cannot use completely solid glass as i need the capillary to melt in the metal wire. However i can melt quite a large part at the end of the capillary without major deformation but there is still a very small channel. The only option would be to open the capillary at some point...
Yes the glass works very well for guiding the light. However as I saw today again, it seems unavoidable to have major losses while coupling in the light (about 90% or more of the initial power of the light source is lost). Why is that? Reflection losses should only be 4% ?
This is also the case...
Many thanks for your answers! I have attached a sketch. The glass capillary is used to melt in a small metal wire which is then used as an electrode. The idea is to use the glass fiber both for insulation of the metal wire and for local illumination as we want to study photocatalyst reactions on...
Hey everyone,
I am trying to couple light from an optical fiber connected to an LED (365nm) into a small glass capillary which is pulled on one end and should be used as a small light source. The idea is to use the glass as a light guide. Has anyone tips for efficient incoupling of the light?
I...