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Frequency doubled laser diode COHERENT D3 !

Coherent 430 D3 is the most complicated laser diode never developed.

There are less then 20 of this units sold world wide.

This laser cost well over the price of a new BMW ( 49'000 USD ).

This laser can be used for holography it has a coherent length over 6 meters.

It use a single mode 860 nm laser diode feeding an external resonant doubling
Cavity. The doubling crystal is a deuteried KDP. It was developed in the late 1990s
When there were no low cost ways of generating 430 nm laser


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