2018, Nguyen, T.-P., Wenzel, H., Brox, O., Bugge, F., Ressel, P., Schiemangk, M., Wicht, A., Tien, T.Q., Tränkle, G.

The influence of the front facet reflectivity on the spectral linewidth of high power DFB (distributed feedback) diode lasers emitting at 780 nm has been investigated theoretically and experimentally. Characterization of lasers at various front facet reflections showed substantial reduction of the linewidth. This behavior is in reasonable agreement with simulation results. A minimum linewidth of 8 kHz was achieved at an output power of 85 mW with the laser featuring a front facet reflectivity of 30%. The device with a front facet reflectivity of 5% reached the same linewidth value at an output power of 290 mW.

2012, Tränkle, G., Erbert, G., Wicht, A., Spiessberger, S.

[no abstract available]

2012, Tränkle, G., Erbert, G., Wicht, A., Luvsandamdin, E.

[no abstract available]

2011, de Angelis, M., Angonin, M.C., Beaufils, Q., Becker, Ch., Bertoldi, A., Bongs, K., Bourdel, T., Bouyer, P., Boyer, V., Dörscher, S., Duncker, H., Ertmer, W., Fernholz, T., Fromhold, T.M., Herr, W., Krüger, P., Kürbis, Ch., Mellor, C.J., Pereira Dos Santos, F., Peters, A., Poli, N., Popp, M., Prevedelli, M., Rasel, E.M., Rudolph, J., Schreck, F., Sengstock, K., Sorrentino, F., Stellmer, S., Tino, G.M., Valenzuela, T., Wendrich, T.J., Wicht, A., Windpassinger, P., Wolf, P.

We present iSense, a recently initiated FET project aiming to use Information and Communication Technologies (ICT) to develop a platform for portable quantum sensors based on cold atoms. A prototype of backpack-size highprecision force sensor will be built to demonstrate the concept.