Abstract
High-power diode lasers capable of generating spectrally stable and nearly diffraction-limited optical pulses in the nanosecond range can be used in a variety of applications including free-space communications, metrology, material processing and frequency doubling. Especially nanosecond laser systems emitting more than 10 W optical peak power are of potential interest for differential absorption light detection and ranging of atmospheric species (DIAL). Due to the pressure broadening of the absorption lines a spectral line width below 0.01 nm together with excellent wavelength stability is necessary. MOPA systems where a distributed Bragg reflector (DBR), a distributed feedback (DFB), or an external cavity diode laser (ECDL) acting as master oscillator (MO) and a tapered amplifier as power amplifier (PA) have promising characteristics. They combine the narrow spectral line width and the wavelength stability of the MOs with high output power of the PA.
© 2013 IEEE
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