Femtosecond ready NSOM-AFM-STM (Request a quote)
Near-field Scanning Optical Microscope (NSOM) is a versatile tool for nano-characterization
and nanomanufacturing.
Conventional microscopes have fundamentally limited resolution due to
diffraction, but there is no such restriction for near-field interactions, that
is why near-field microscopy is becoming one of the most important techniques
for nano-science.
Possible applications of this tool are characterization
of photonic nanodevices, bio photonics (investigation of cells, viruses, DNA
molecules), nano-chemistry (chemical reactions control), nanoscale
photolithography (processing of photosensitive polymers).
NSOM delivered femto-second pulses can be used for nanometer-scale surface
topology modification. Temporal resolution provided by femtosecond laser opens
wide range of new possibilities such as: transport dynamics studies of
nanostructured materials, pump-probe experiments, ultra fast coherent and Raman
spectroscopy. Spatial optical resolution of the tool is better than 100 nm and
temporal resolution in the pulse operation mode is better than 100 fs. Tunable
CW operation for spectral measurements is also available, wavelength range in
this case is 710-950 nm.
Advanced Nearfield Scanning Optical Microscopy/Atomic Force Microscopy/Scanning
Probe Microscopy systems (NSOM-AFM-SPM) are used for numerous applications in
materials research, including semiconductors, data storage, electronic
materials, solar cells, polymers, catalysts, life sciences and nano-sciences.
NSOM-AFM-SPM is a well-established method for ultra-high nano-scale spatial
resolution surface imaging and the characterization of surfaces and interfaces
down to atomic dimensions.
Recommended reading:
The Femtosecond Near-field Scanning Optical Microscope (NSOM) will allow fundamental investigations of pulse multiwave mixing in Semiconductor Optical Amplifiers (SOA) and will, in particular, allow attention will be given to enhancements of multiwave mixing efficiency arising due to pump/probe detuning. The NSOM will also allow simultaneous observation of spatial and dynamical behavior in, for example, VCSELs undergoing optical switching of polarization and transverse modes and hence enable a clear demonstration of the mechanism underpinning the observed switching. The facility will also be used toexamine spatio-temporal effects arising in external cavity VCSELs and multitransverse modes in VCSELs subject to optical injection where rich dynamical behavior is known to arise. These observations will significantly enhance understanding of the processes occurring in such VCSEL configurations and will thus provide crucial information for their application in sensor and monitoring functions. (pdf)
Femtosecond lasers recommended for use with NSOM
Ti:Sapphire lasers
Trestles femtosecond Ti:Sapphire laser
Trestles Finesse femtosecond
Ti:Sapphire laser with integrated DPSS pump laser
Teahupoo Rider femtosecond amplified
Ti:Sapphire laser
Cr:Forsterite lasers
Mavericks femtosecond
Cr:Forsterite laser
Er-based lasers
Tamarack femtosecond fiber laser (Er-doped
fiber)
Buccaneer femtosecond OA fiber laser (Er-doped
fiber) and SHG
Cannon Ultra-broadband light source
Yb-based lasers
Tourmaline femtosecond Yt-doped fiber laser
Tourmaline Yb-SS400 Ytterbium-doped Femtosecond Solid-State Laser
Tourmaline Yb-ULRepRate-07 Yb-based high-energy fiber laser system kit
Cr:ZnSe lasers
Chata femtosecond Cr:ZnSe laser (2.5 micron) coming soon