No coin nor oath required. For personal study only.
A high-power wavelength-tunable femtosecond fiber laser source is developed based on photonic-crystal-fiber technology. Laser oscillator and amplifier stages in this system employ diode-pumped ytterbium-doped single-polarization large-mode-area photonic-crystal fibers in a stretcherfree configuration, delivering laser pulses with an average power of 10.4 W, a pulse width of 52 fs, and a peak power of 4 MW at a repetition rate of 50 MHz after pulse compression. This high repetition rate and high power of the developed fiber-laser source enables a high-speed microprocessing of materials and suggests the way toward a parallel microprocessing and micromachining of semiconductors, dielectrics, and metals. This figure shows an optical micrograph of a 90 โข C sector of a silicon wafer micropatterned by using a 450-mW, 50-MHz LMA-PCF laser output.
๐ SIMILAR VOLUMES
## Multi-wavelength fluorescence lifetime spectroscopy: a new approach to the study of endogenous fluorescence in living cells and tissues The study of biological systems in their real environmental conditions is crucial to decipher the true image of structures and processes underlying their functi
Laser performance of Yb:YAG ceramics and crystals doped with different Yb concentrations were investigated systematically by using laser-diode two-pass pumping miniature laser configuration. Although the laser performance of Yb:YAG ceramics doped with low Yb concentration is inferior to that of thei
This figure shows the output spectrum of Brillouin fiber laser (BFL) at different output couplers. The pump power of each is 1480 nm. Pump and Brillouin pump (BP) is fixed at 100 mW and 6 dBm, respectively. As shown in the figure, the highest number of lines are observed with the 95/5 coupler. In th
A 392 mW continuous-wave (CW) cyan laser at 500.8 nm intracavity sumfrequency mixing in double-crystal RTP was reported. The cyan laser was generated by mixing 1064 nm Nd:YVO4 laser and 946 nm Nd:YAG laser. The cyan light spot of the far-field was presented. (Cover picture: