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Physics
Classical Physics
Optics
Light coupling from optical fiber to glass?
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[QUOTE="Mary09, post: 6832925, member: 731565"] 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 couple enough light to investigate the reaction. For me it is just the question if i really need such high power (comment #6) or if it is possible to optimize the coupling somehow - The electrode will pick up a DC which is measured against a reference electrode - The electrode wire will continue to the outside and will then be connected to a potentiostat. Like in drawing from #16 the wire can either come out somewhere at the front (i need to open the glass) or at the end of the capillary to the side when the fiber is place on the other side of the glass wall - As these electrodes can be damaged and may need to be exchanged, i would prefer not to glue any lens there (lenses are quite expensive i suppose? or could there be an easy way to remove the glue?) so maybe design a specific holder for the fiber/lens with the capillary? - i am not working inside a vacuum chamber - i contacted the company and they suggested to use an aspherical or achromatic lens but not anymore it should ideally not absorb light in this range you are right. I will check what we have and the ones you suggested, thank you! [/QUOTE]
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Forums
Physics
Classical Physics
Optics
Light coupling from optical fiber to glass?
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