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Experiments with a femtosecond laser at microJules energy level and 2KHz repetition rate are done with a CPA system (Clark-MRX 2101). The amplified output beam is at 775 nm wavelength, with 250 fs pulse duration and the max. pulse energy is 0.7 mJ. This system is used in experiments such as laser ablation for micro and nano-structuring experiment on ceramics, semiconductors and metallic film, or two-photon photo-polymerization of photoresists for 3D micro-structuring, development of a multipulses laser for pump-probe experiments. An additional output from the oscillator of the CPA offers femtosecond laser beam at 35 MHz for ultrafast laser spectroscopy.
CPA femtosecond laser
Our group has a large experience in design and construction of flash and diode pumped solid-state lasers, laser microchip based microlasers, amplified solid-state lasers. A compact Nd:YAG laser with diode pumped microlaser, amplified in a multipass configuration up to 20 mJ pulse energy at 1-10 Hz. The laser can provide output beams at 1064, 532, and 266 nm, with pulse duration of about 500 ps. These laser radiations are suitable to applications such as laser microprocessing, laser induced break-down spectroscopy (LIBS), Near-field nanopatterning
Laser near-filed nanolithography on monodispersed colloidal nanoparticles
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