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Injection-seeded pulsed Ti : sapphire laser with novel stabilization scheme and capability of dual-wavelength operation

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Ertel,  K.
Climate Processes, MPI for Meteorology, Max Planck Society;

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Linné,  H.
The Land in the Earth System, MPI for Meteorology, Max Planck Society;

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Bösenberg,  J.
The Land in the Earth System, MPI for Meteorology, Max Planck Society;

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Citation

Ertel, K., Linné, H., & Bösenberg, J. (2004). Injection-seeded pulsed Ti: sapphire laser with novel stabilization scheme and capability of dual-wavelength operation. Applied Optics, 44(24), 5120-5126. Retrieved from http://www.opticsinfobase.org/abstract.cfm?URI=ao-44-24-5120.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0012-0025-6
Abstract
A gain-switched, single-frequency titanium-sapphire laser for atmospheric humidity measurements using the differential absorption lidar technique operating in the 820 nm wavelength region is described. The laser is pumped by a frequency-doubled, flashlamp-pumped Nd:YAG laser at a repetition rate of 50 Hz and injection seeded by two external-cavity-diode lasers. The system yields pulses with an energy of 15 mJ and high spectral purity. We describe a novel active injection-locking technique that avoids the problems of established methods like dither-lock or ramp-and-fire. Furthermore, our method opens the possibility to switch between two wavelengths for alternating shots, in contrast to most established techniques that only allow operation at one wavelength.