Focusing through Sapphire Plate ? ? ?

Hi everybody



Focusing through Sapphire Plate


We are trying to focus an ideal converging beam through a 6 mm plane
parallel plate of Sapphire. The focal point should be at the back surf of
the plate.

We intend to attach to the plate a 2.5 mm thick PCX lens, made of glass with
n very near the index (ordinary) of Sapphire, so that a Hemispherical
immersion lens will be achieved.



Running this system both on Zmax and Synopsys, the best we could achieve is
a very small spot (ordinary), concentric with a large spot (extraordinary).

The Zmax indicates that the energy in the large spot is zero, but we are not
sure this is correct.



Is there a way to tackle this problem ?



TIA



Shay




--
Shay Ghilai

t: ++972-3-6473647
f: ++972-3-6473508
c: ++972-523-594907

sgoptics@xxxxxxxxxxxxxxxx
Box 10033, Zahala, Tel-Aviv,
Israel 61100




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