Self-starting femtosecond pulse generation from a Ti:sapphire laser synchronously pumped by a pointing-stabilized mode-locked Nd:YAG laser

Abstract

Synchronously pumped modelocked dye laser pumped by a frequencydoubled modelocked and Q switched diode laser pumped Nd:YAG laserWe have constructed a self-starting Kerr-lens mode-locked Ti:sapphire laser pumped synchronously by a mode-locked, LBO-doubled Nd:YAG laser. Using a home-built beam-pointing stabilizer, beam wander of the 532 nm pump is reduced by a factor of 25, thus enabling long term operation of TEMee nearly transform limited pulses with amplitude, repetition rate, and pulsewidth fluctuations comparable to or better than those of Ar-pumped Ti:Al,O, lasers. Interferometric autocorrelation using second harmonic in reflection from GaAs yielded a pulse width of 30 fs, limited by the dispersion of wide bandwidth cavity optics which permit tunability from 0.7 to 1.0 pm.

Low noise position sensitive detector for optical probe beam deflection measurements

“…Active feedback control systems 13,14 for laser beam pointing stabilization incorporate position sensitive detectors to monitor the position and angle of an input laser beam, amplifying the detector signals to drive mirror mounts with piezoelectric transducers. Because internal electrical noise may limit the ultimate performance of these systems, it might be of value to design a laser beam pointing stabilizer that incorporates discrete photodiode devices rather than conventional position sensitive detectors.…”

Simulation of Kerr Lens Modelocking Behavior in Sagittal Plane

“…The position and size of the beam waist is critical for the soft and hard aperture Kerr lens mode locking [5,19,32]. …”

High-performance beam stabilization for next-generation ArF scanner systems

“…The beam leaving the light source must be projected many meters (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) and reflected off many turning mirrors as it travels from the light source to the scanner. The jitter in the beam exiting the laser for a typical light source operating in spec is on average 100um in position and 100urad in angle.…”