Optical measurement techniques, including those relying on
femtosecond lasers are among the main information sources on
nano-structures and key methods of their non-invasive control. Femtosecond
light pulses feature extremely short duration and high radiation intensity
that constitute the uniqueness of their interaction with nano-structures and
nano-compound materials and provide exceptional opportunities for investigation
of ultra-fast process dynamics in these materials. Study of ultra-fast
phenomena in different nano-structures (thin films, quantum-sized and fractal
structures, layered nano-materials, etc.) provides the necessary fundamental
knowledge base in this area for development of more advanced and faster devices
in nano-electronics, opto-electronics, and spintronics. This research also
facilitates development of ways to control elementary excitation in solid-state
matter (phonons, excitons, plasmons, etc.) as well as plasmon-exciton
interactions in hybrid nano-structures, and prospective methods for laser
modification of nano-structure properties. They are important for building
efficient terahertz radiation generators based on nano-structures and in
solving many other problems.
Application of femtosecond laser systems in combination with devices providing
high spatial resolution (atomic-force and tunnel microscopes, optical
near-field microscopes) allows a substantial acceleration of progress in
development of highly sensitive non-linear optical methods for analysis of
composition, structure, and morphology of nano-structured materials and further
opens a way to an entirely new level of understanding in the field of
nano-states of matter.
Lasers generating short (nanosecond) and ultra-short (pico- and femtosecond)
pulses offered by Tekhnoscan are reliable instruments
invaluable in research and in solving high-technology problems related to
nano-systems and material sciences.
Solid-state (Ti:Sapphire, Yb:KYW) pico- and femtosecond
lasers "FEMoS" and "Femto-Star"
provide, correspondingly, output pulse duration 20-50 fs in 720-1000 / 310-500 nm
and 250 fs to 10 ps in the range of 1040-1050 / 520-525 nm.
The family of fibre lasers offered by
Tekhnoscan ("Ytterbius-Master",
"Erbius-Femto", and others) provides
femtosecond, picosecond, and nanosecond pulses in the range 1060-1115 / 530-557 nm
and 1550-1620 / 775-810 nm.
Solid-state and fibre lasers are available in combination with optical
amplifiers used to increase the energy of output radiation pulses up to 100 uJ
and higher. In addition, ultra-fast Tekhnoscan lasers may be shipped as kits
with all necessary special equipment and as complete turn-key femtosecond
laser labs (see delivery of integrated laser systems).
