Dresden 2011 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster 1: Quanteninformation, Quanteneffekte, Laserentwicklung, Laseranwendungen, Ultrakurze Pulse, Photonik

Q 15.42: Poster

Montag, 14. März 2011, 16:30–19:30, P1

Er³⁺-Doped YVO₄ Laser Emitting around 1.6 µm — Christian Brandt, •Francesca Moglia, Klaus Petermann, and Günter Huber — Institut of Laser-Physics, Luruper Chaussee 149, 22761 Hamburg, Germany

Resonantly inband pumped Er³⁺-doped solid-state lasers offer the opportunity for efficient operation around 1.6 µm wavelength. These lasers in the eye-safe region are interesting for medical applications, telecommunication, and remote sensing. In particular for remote measurements of CO₂ using the DIAL (Differential Absorption Lidar) technique an efficient laser is needed at appropriate absorption bands of the CO₂ molecule at 1579 nm or 1603 nm.

Resonantly inband pumping an Er(1.1 at.%):YVO₄ crystal by a fiber laser at 1536 nm results in a maximum slope efficiency with respect to the absorbed pump power of 57.9%. For the maximum pump power of about 8 W a maximum laser output power of 2.3 W was achieved. Depending on the output coupler transmission the free running laser oscillated between 1603 and 1608 nm. By using a birefringent filter the laser wavelength could be tuned from 1578.8 to 1582.3 nm and from 1601.4 to 1607.8 nm, covering two suitable wavelengths for CO₂ DIAL application. Between these tuning bands the laser also oscillated at 1594 nm.