Development Update of High Index Lens Material LuAG - Sematech
Development Update of High Index Lens Material LuAG - Sematech
Development Update of High Index Lens Material LuAG - Sematech
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SCHOTT Lithotec <strong>High</strong> <strong>Index</strong> <strong>Lens</strong> <strong>Material</strong> <strong>LuAG</strong><br />
Temperature dependent transmission measurements <strong>of</strong><br />
<strong>LuAG</strong> carried out at Synchroton BESSY<br />
Transmission<br />
1<br />
0,1<br />
0,01<br />
T = 80 °C<br />
0,001<br />
170 175 180 185 190<br />
Sample thickness: 0.4mm !<br />
14 5 th Intern. Immersion Symposium<br />
22-25.9.2008, The Hague, NL,<br />
Wavelength / nm<br />
T = -50 °C<br />
T = -20 °C<br />
T = 5 °C<br />
T = 25 °C<br />
� Band Gap at room temperature (300K) = 7.08 eV = 175nm<br />
(old value: 178nm)<br />
Cooling<br />
increases the<br />
bandgap by<br />
1.75 meV/K<br />
= 7.08 eV
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