3–6 µm dispersive mirrors compensating for dispersion introduced by the GaAs crystal

• DOI: 10.1364/ao.441787
• Publication Date: 2021-09-27T15:31:51Z
• Authors: Yu Chen; Daniel Hahner; Vladimir Pervak
• Keywords: Crystal (programming language)

A new broadband dispersive mirror (DM), which consists of Si and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi mathvariant="normal">S</mml:mi> mathvariant="normal">i</mml:mi> mathvariant="normal">O</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msub> </mml:math> layer materials operating in the spectral range 3–6 µm, is developed for first time, to our knowledge. The DM able compensate dispersion a 0.5 mm thick GaAs crystal per bounce. Pulse analysis proves that compensation effect much better than mathvariant="normal">C</mml:mi> mathvariant="normal">a</mml:mi> mathvariant="normal">F</mml:mi> plate, commonly used element mid-infrared optical parametric oscillators (MIR OPOs), MIR could improve OPO spectrum with pulse quality short duration.