Ole Bjarlin Jensen is performing research within diode lasers, soilid state lasers and nonlinear optics. The research in diode lasers focuses on improvement of the spatial and spectral coherence of diode lasers through the use of external cavity techniques and beam combination of different diode lasers. These diode lasers are used to generate new wavelengths through nonlinear frequency conversion like second harmonic generation and sum/difference frequency generation. The research has strong focus on applications, in particular biomedical applications.

Selected papers:

1. A. Müller, O. B. Jensen, K.-H. Hasler, B. Sumpf, G. Erbert, P. E. Andersen, and P. M. Petersen, „Efficient concept for generation of diffraction-limited green light by sum-frequency generation of spectrally combined tapered diode lasers” Opt. Lett., 37, 3753, 2012.
2. O. B. Jensen, B. Sumpf, G. Erbert, and P. M. Petersen, „Widely tunable high-power tapered diode laser at 1060 nm“, IEEE Phot. Tech. Lett. 23, 1624, 2011.
3. H. P. H. Cheng, P. Tidemand-Lichtenberg, O. B. Jensen, P. E. Andersen, P. M. Petersen, C. Pedersen, „All passive synchronized Q-switching of a quasi-three-level and a four-level Nd:YAG laser”, Opt. Express, 18, 23987, 2010.
4. O. B. Jensen, B. Thestrup and P. M. Petersen, “A new approach to asymmetric feedback in a segmented broad area diode laser”, Opt. Comm. 282, 2898, 2009.
5. O. B. Jensen, P. E. Andersen, B. Sumpf, K.-H. Hasler, G. Erbert, and P. M. Petersen “1.5 W green light generation by single-pass second harmonic generation of a single-frequency tapered diode laser”, Opt. Express, 17, 6532, 2009.