David Hunger

room	3. OG / 2
phone	+49 (0)89-2180-2046
fax	++49 (0)89-2180-3938
mail

RESEARCH

Nanoresonator-BEC experiment

I'm currently setting up the laser system, vacuum & electronics equipment.

Optical microcavities

We developed a method to fabricate micro cavities with optical fibers as mirror substrates. The endfacets of cleaved fibers are laser maschined to obtain a concave surface with ultra low roughness (0.24nm rms). This serves as substrate for HR low loss coatings to provide high finesse mirrors. Cavities built from pairs of such fibers reached a Finesse of F=38000 with extremely small mode volume V~30µm³. Such cavities can be used for single atom detection and cavity QED experiments on atom chips (pursued in the Group of Prof. Jakob Reichel, LKB/ENS Paris ).