Frog 스캔은 고객의 펄스 측정의 모든 필요를 신속히 끝내도록 디자인되도록 개발된 펄스측정
시스템이며 , 펄스 측정 파장은 450 nm 에서 1800 nm이고 12fs 에서 10’s picosecond 까지
측정 범위가 제공되며 ,비디오Frog 스캔 소프트웨어에서 4Hz 에 가까운 실시간 펄스 측정을
할수 있다. (32 x 32 grid, ~115 spectra/second, 1.8 Hz for 64 x 64 grid)
Shown on
right is a picture of the FROG Scan. Your laser beam enters from the right
through an alignment iris and part of the beam exits through another external
iris. A beam splitter sends one pulse replica though a fixed delay. The other
replica is sent to the high-speed, high accuracy optical delay line. Both beams
are focused into a second harmonic generation crystal. The SHG signal from the
pulse overlap region is spectrally resolved using an Ocean Optics USB4000 or
USB2000+ spectrometer that can be changed as your pulse measurement needs
change.
Do not be
fooled by its simplicity, however. Because of your seamless ability to change
the time span of a scan, a single configuration of our FROG Scan can replace 3
or more competing FROG devices. The added dynamic range of the 16-bit data
acquisition allows highly structured pulses and high order phase distortions to
be measured.
Our device
can also accomplish measurements competing devices cannot do. For example, just
try to measure a 20 fs laser pulse chirped to 400 fs with competing FROG
devices. You can’t. The combination of the pulse length and the bandwidth
cannot be handled by any device that uses the SHG crystal as the dispersive
element. FROG Scan makes such a measurement easy. Time scan ranges can be
changed on the fly, and wavelength too–all by software control. USB connections
to your computer are all that is required. With software included, it is the
best value available for pulse measurement.
Specifications FROG Scan
Wavelength
Range 450
nm -1800 nm
Pulse
Length Range ~
12 fs - 10 ps
Temporal
Range 30
ps
Delay
Increment 1
fs
Spectral
Resolution 0.2
nm – 1 nm
Spectral
Range 100
nm – 600 nm
Pulse
Complexity TBWP
> 50
Intensity
Accuracy 2%
Phase Accuracy 0.01
radians
Realtime
Sensitivity (IpeakIave) 4
W2
Averaged
Sensitivity (IpeakIave) 0.1
W2
Input Beam
Size 2
mm – 4 mm
Nominal
Polarization Horizontal
Acquisition
Speed >
3 Hz 32 x 32 grid, 1.8 Hz 64 x 64 grid
Spectra
required for measurement number
in grid
Software VideoFROGscan
– Included in price
Specifications
FROG Scan Ultra
Wavelength
Range 450
nm – 3600 nm
Pulse
Length Range ~
12 fs - 10 ps
Temporal
Range 30
ps
Delay
Increment 1
fs
Spectral
Resolution 0.05
nm – 1 nm
Spectral
Range 100
nm – 600 nm
Pulse
Complexity TBWP
> 50
Intensity
Accuracy 2%
Phase
Accuracy 0.01
radians
Realtime Sensitivity
(IpeakIave) 0.04
W2 (Requires QE65000 for better than 4 W2 sensitivity)
Averaged Sensitivity
(IpeakIave) 0.001
W2 (Requires QE65000 for better than 4 W2 sensitivity)
Input Beam
Size 2
mm – 4 mm
Nominal
Polarization Horizontal
Acquisition Speed > 3 Hz
32 x 32 grid, 1.8 Hz 64 x 64 grid (USB2000+, other spectrometers are slightly
slower)
Spectra
required for measurement number
in grid
Software VideoFROGscan
– Included in price
* The
complete range cannot be covered with a single configuration. Spectrometer ranges and resolution determine
the wavelength range and the longest transform limited pulse that can be
measured, respectively. Crystal and
spectrometers are user/field changeable.
Spectrometer changes are automatically recognized by the software. For some of our pre-configured FROG Scan
systems click here.
