Here, we show custom-ordered system that we made in the past.
We do not sell and develop custom-ordered system at present.
Second harmonic generation microscope: SHG-21
When polar molecule is illuminated by strong light, the second harmonic generation (SHG) of the incident light is arised by non-linear responce of the molecule. SHG-21 is the only microscope which can observe SHG in real time. Because SHG can be obtained strongly when the molecule are aligned, we can know the sequence information of the molecule by seeing SHG. SHG microscope can be utilized for understanding of 3D structure of the material since intensity of the SHG light is proportional to square intensity of the incident light. SHG-21 has fast-rotating microlens array scanner and high-speed CCD camera, so that image capture at 1000 FPS can be obtained even the SHG or multiphoton fluorescence is very weak
Thermo Reflectance Measurement System: TRMS
Thermo Reflectance Measurement System (TRMS) is a microscope which can measure the temperature change by thermoreflectance technique. In the thermoreflectance technique, the temperature change can be detected by monitoring reflectance change induced by temperature change of the sample surface . Since TRMS has submicron high spatial reslolution, it can be applications/cable for temperature measurement of micro wiring in the semiconductor devices. The detection limit of the temperature in TRMS is 1K. For mearements of temperature change by thermoreflectance technique, it is important to detemine the reflectance with high accuracy. For example, temperature dependence of the reflectance of Copper is about 1.5×10-5/K. For detection of temperature change of 1K, TRMS can measure the reflectance with accuracy of the order of 10-6.
Single molecule microspectroscopy / fluorescence lifetime measurement system: NSAS
NSAS can do fluorescence excitation in materials by mode-locked Ti:S laser (femto sec. laser) and obtain its time-dependendent spectroscopic information by streak camera combined with spectrometer. And in NSAS, very weak fluorescence analysis can be achievable by using photon-counting avalanche photodiode and time correlation single photon counting (TCSPC) circuit. NSAS is designed for ultrabroadband wavelength and avalable from ultraviolet to infrared region, which is equal to wavelength generated by Ti:S laser and its SHG. In addition, confocal optical system is employed in NSAS in order to achieve high resolution and reject stray light.
Microscopy system in ultra high magnetic field: TESRA SCOPED
TESRA SCOPE is a laser microscope which can work under high magnetic field in superconducting magnet. It is consist of two components, one is a confocal microscope with high resolution and the other is a periscope placed in the solenoidal superconducting magnet. The confocal microscope is designed for ultra fast scanning confocal microscope which equip 410 nm blue laser diode, so that highspeed imaging at video rate and 0.14um high spatial resolution are available. The periscope and its surroundings, which has no magnetic component, are not affected even in supercondutcing magnet under ultrahigh magnetic field up to 12T. TESRA SCOPE can get the image in both Faraday and Voigt geometry, the temperature dependent image and polarizing image. An optical relay technique in periscope can be utilized for imaging not only under high magnetic field but also in environment which microscope cannot be easily put on, like radiation chamber.
Evaluation system for EO device in communication band: ICLM
ICLM is a transmission microscope which can work in the region of communication band. The polarization detection sensitivity is over 1000 : 1.
|Light source||Near infrared semiconductor laser|
|Visible optical monitor system||Color CCD imaging sensor|
|Infrared optical monitor system||wavelength conversion CCD imaging sensor|
Surface SHG light analyzer: SHG-Mol
SHG-Mol is a measurements system for circular dichroic spectrum of molecule excited by mode-locked Ti:S laser. By illuminating a sample put under the microscope by the laser in an oblique direction defined by limitation of numerical aperture of objective lens, then we observe SHG. When we measure the SHG by changing incident light from right to left circular light with seeking its wavelength, circular dichroic spectrum of molecule can be obtained.
|Light source||Femto sec. Ti:S laser|
|Visible optical monitor system||CCD imaging sensor|
|SHG detection optical system||Photomultiplier|
Single molecule and single photon fluorescence lifetime measurement system: PCM-100
PCM-100 can do time correlation counting of weak fluorescence from single molecule excited by mode-locked Ti:S laser. A sample put on the inverted microscope emits fluorescence by optical excitation under the sample stage. By confocal optical system set on the back of the microscope, the fluorescence is lead to a pair of photomultiplier after reduction of scattering light. Since these photomultiplier are placed across polarized beamsplitter, TCSPC including polarization analysis can be achieved. By employing TCSPC technique, very weak fluorescence such as only one photon come from several tens of thousands of optical pulse excitation can be observable. With this technique, very weak single molecule fluorescence become possible. Both NSAS and PCM-100 have a fuction that gives an image of result of TCSPC by driving piezo scanning stage.
|Light source||femto sec. laser, frequency doubler and pulse picker|
|Detection system||Photon counting APD with 2 channnels and TCSPC board|
|Stage||3-axes Piezo stage|