A notch filter pre-broadens seed pulse spectra to offset gain narrowing, shortening sub-picosecond amplifier output pulses.
A graded-transmittance aperture controls diffraction to suppress laser energy peaks, protecting optical components and reducing safety risk.
Spectral bandwidth and dispersion tuning lets one pulsed laser vary pulse duration widely with low distortion, reducing hardware cost and setup complexity.
Temporally successive laser pulses are phase-matched and overlapped into one higher-energy pulse with fewer optical components.
Frequency-shifted seed fields from one master laser injection-lock multiple amplifiers, improving phase coherence and reducing phase noise.
Planar waveguide resonators and an on-chip frequency doubler shrink Ti:Sapphire ultrafast lasers for lower-cost photonics integration.
Different-dispersion fiber arms create time-offset laser bursts while keeping pulse duration consistent in a compact, interference-resistant setup.
A sealed window and modular housing let optical axis adjustment and laser source replacement proceed without exposing fibers and optics to contamination.
Driving current is tuned for each excitation source to equalize fiber laser beam power, suppress Stokes oscillation, and stabilize output.
Branched pump light from different sources keeps optical amplification running after one source fails while simplifying EDFA repeater wiring.
A reflective fiber topology doubles the ASE path to span C+L bands with fewer components, less card space, and steadier gain.