IPG Photonics’ YLPF-FlexO femtosecond laser offers unprecedented flexibility in choosing parameters optimal for the application. The YLPF-FlexO laser provides pulses as short as sub-40 fs with >50 nJ per pulse at 11 MHz repetition rate. The laser system incorporates IPG’s proprietary pulse shaping technology that enables users to choose a desired temporal pulse shape, from the shortest near-transform-limited pulse to a variety of programmable shapes. Shaped time-domain profiles and multi-pulse waveforms within +/- 3 ps time window can be created via spectral phase and amplitude shaping.
|Pulse Duration from sub-40 fs to 4 ps|
|Peak Power > 1 MW|
|Programmable Pulse Shape : Transform-limited or Shaped Pulses on Demand|
|Push-button Dispersion Compensation|
|Central Wavelength*, nm||1055±15|
|Spectral Width*, nm||>80, typ. 95|
|Average Power, mW||>550|
|Pulse Energy, nJ||>50|
|Repetition Rate, MHz||11± 0.5|
|Temporal Pulse Shape||Programmable|
|Programmable Device||2D LCOS Spatial Light Modulator|
|Pulse Control Variables**||Phase and amplitude*|
|Transform Limited Pulse Duration (FWHM), fs||<50, typ. sub-40|
|Programmable Time Range***, ps||>6|
|Beam Diameter****, mm||3±0.3|
* The central wavelength and width are determined at -10dB level.
** Use diffractive shaping to enable phase-only, amplitude-only, and phase-and-amplitude control.
*** FWHM of the second-harmonic generation (SHG) intensity profile as a function of shaper-assisted time delay.
**** Beam diameter at the laser output, measured by the knife-edge method, 84% level.
|Console Dimensions (W × D × H), mm||448 × 580 × 132|
|Optical Head Dimensions (W × D × H), mm||178 × 359 × 118|
|Console Weight, kg||26|
|Optical Head Weight, kg||<7|
|Total Weight, kg||<33|
|Supply Voltage, VAC||single phase, 110-240, 50-60 Hz|
|Bio-imaging & Nonlinear Microscopy
|Multiphoton Polymerization & 3D Printing
Figure 1: Typical output spectrum of YLPF-FlexO laser. In the time domain, the spectrum supports pulses as short as 36.2 fs FWHM (Fourier-transform limit).
Figure 2: Autocorrelation trace measured after MIIPS-enabled dispersion compensation. The experimental FWHM of 38.1 fs is only 5% higher than the transform-limited (TL) pulse duration. The conversion factor of 1.34 follows from the shape of the laser spectrum.
Figure 3: Measured autocorrelation profiles for compressed and pre-chirped pulses. The second-order dispersion, known also as linear chirp, is applied by the built-in programmable pulse shaper. The logarithmic vertical scale is used to highlight both peak power and pulse duration trends. The ACF FWHM scales from 51 fs to 2,100 fs.
Figure 4: Selective two-photon excitation via phase-only shaping. The third-order dispersion of 300,000 fs3 is programmed at various wavelengths, λ0, across the laser spectrum to diminish the two-photon transitions other than to λ0/2.
YLPF-FlexO Optical Head
YLPF-FlexO Rack Unit