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Melles Griot High Power DPSS Internal Optics

diachi

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Recently picked up this Melles Griot high power 532nm DPSS unit. Bought it as not working with the hopes of aligning it, unfortunately the Nd:YVO4 broke off during transit - more on that later. Currently working on getting replacement parts. I have only linked the images here, they were far too large to embed. :(

Melles Cleanup and Inspection - Album on Imgur << That is a link to the entire album if you don't fancy clicking all the images individually. :)

The unit after some minor tear down - In need of a good clean. :yabbem:
http://i.imgur.com/0BE3wtc.jpg


After a good clean up: :D
http://i.imgur.com/VQzFAYT.jpg


Overview of the internal optics (Labeled - Courtesy of the Laser FAQ http://www.repairfaq.org/sam/mghpgdl1.jpg).:drool:
http://i.imgur.com/1qLASTg.jpg

The cavity - This is where the magic happens and the 532nm light is produced.

From left to right: Beam sampling mirrors, Output Coupler, KTP + Mount (Rectangular silver piece), Where the Nd:YVO4 should be, Focusing Optics, Fiber bundle.
http://i.imgur.com/TcjDnRS.jpg

An illustration of how this works:



Front view of the cavity with output coupler and beam sampling mirrors visible.
http://i.imgur.com/PfcZpxD.jpg


Front view of the cavity, this time with the pump diode visible (Brass object in the background).
http://i.imgur.com/9Vz8EBa.jpg


Another view of the cavity, you can see the rectangular glass mirror (White glue on 4 corners, where the Nd:YVO4 should be attached. Also visible is the fiber bundle at the end of the fiber coupler.
http://i.imgur.com/aVmKvT6.jpg


KTP held in it's mount.
http://i.imgur.com/B1xvYia.jpg


Output Coupler, KTP and Beam Sampling mirrors
http://i.imgur.com/SoqKBDf.jpg


Side view of the entire assembly.
http://i.imgur.com/9E6cYuf.jpg


This is the piece of Nd:YVO4 that had broken off - you can see the round mirror still attached on one side. Mirror (as best as I can guess) is HR@532nm and AR@1064nm. Pencil for scale. Unfortunately it's not even worth trying to reattach - I'm now working on getting another working cavity that I can place it into this head.
http://i.imgur.com/yEqImVt.jpg


Thanks for looking and I hope you enjoyed the pictures! If anyone needs any further information or would like something explained then feel free to ask! :D

Cheers!

Adam
 
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