…can affect the measurement repeatability of non-uniform beams or beams that wander over the detector surface between measurements. These characteristics make photodiodes most useful for low power measurements of CW lasers, as well as pulse shape characterization of nanosecond pulsed lasers. Thin…
…which determine the type of beam profiler to
use are wavelength, beam size, laser power (or energy) and
operating mode (CW or pulsed).
The wavelength being measured largely determines the type of
detector device needed. For the wavelength range from 190 nm to…
…the Time Axis - Width measurement to determine pulse width, risetime, or fall-time of a pulse in the plot.
The software also shades the area
under the curve within the cursors and
calculates the energy of a pulse or
pulses within that region.
The Energy Baseline setting can…
…better process recipes.
These pulses can also be integrated to
calculate individual pulse energy for use in
active feedback control. It has also found
home in process control where the
instantaneous response enables end users to
measure more frequently, thus improving…
0 = pulsing off.
1 = pulsing on.
PRINT PULSE ENERGY
Indicates whether Pulse Energy is on or off.
0 = off.
1 = on.
PRINT PULSE ENERGY PERCENT
Indicates Pulse Energy percentage.
PRINT PULSE MODE
Returns the pulse…
…Access to High Energy sub-5-fs Pulses High pulse energy and long term stability from a one-box Coherent Astrella ultrafast amplifier, together with a novel hollow fiber compressor and a turnkey compressor/measurement d-scan system, provide a simpler route to ultrashort (sub-5-fs) pulses. Overview In…
…(2014) 034004 R Delmdahl and R P¨
Figure 8. Stabilized energy operation at 1 J pulse energy using a single gas fill over 41 h.
Figure 9. Pulse-to-pulse stability versus pulse count and repetition rate measured within a gas fill run.
achieved, the deposited volume per unit…
…Pump Energy Required9 (mJ) 275 400 600
Pulse Compressor10 Air-compatible
HYBRID (1 KHZ OUTPUT) OPTION10
Penter Wavelength2 (nm) 795 to 805
Repetition Rate11 (kHz) 1 kHz (minus 10 Hz pulses picked to seed Hidra Amplifier)
Energy Stability12 (% rms) 0.50
…Ratio >500:1 pre-pulse, >250:1 post pulse; other pulses >1000:1
Beam Quality (M2) <29 <1.5 <1.3
Autocorrelation of RegA 9040 Pulses
Deconvolved Single-Shot Pulse FWHM = 31 fs
Output Pulse Energy
1 Assumes full 12W of Verdi power used…
Pulse Repetition Rate (kHz)
100 150 200 250 300
Average Power (W)
Pulse Energy (µJ)
532-65 Pulse Energy
532-85 Pulse Energy
…be achieved without significant losses in
the output energy or changes in the output pulse duration, making this OPCPA an ideal system
for experiments where tunable sources are required.
Figure 5: Autocorrelator measurements show that the White Dwarf output pulse width is 8.6 fs.
Pulse Energy (µJ) >
Pulse Duration t (FWHM, sech2) 1300 fs <
_ 2000 fs
Pulse Energy Stability (%)(Peak-to-Peak over 1000 Pulses) <
_5 RMS (1s)
Pulse Repetition Rate of Amplifier (kHz) 80 ±0.5
Pulse Repetition Rates after Pulse Picker…