Self-mode-locking laser
A laser, self-mode-locking technology, applied in lasers, laser parts, phonon exciters, etc., can solve problems such as poor reproducibility, achieve a lower mode-locking threshold, maintain stable output power and pulse width for a long time, and system simplistic effect
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[0020] (1) Use a coupling system to modulate the 527nm pump beam output by Nd:YLF frequency doubling, so that the beam incident on the laser crystal is a flat-top Gauss beam with a concave central light intensity, as shown in the attached figure 1 (a), using the attached figure 1 (b) The folded cavity shown in (b), the laser crystal is Ti: Sapphire, and the cavity mirror coating is M 1 ,M 3 ,M 4 : HR (high reflection)@750-850nm, M 2 : HR@750-850nm&HT (high transmission)@527nm, M 5 : T (transmittance) = 3.6%@750-850nm, can realize broadband continuous femtosecond pulse output.
[0021] (2) Use a lens group to realize the modulation of the flat-top Gaussian pump beam, so that the pump beam incident on the laser crystal is a beam with a concave central light intensity, as shown in the attached figure 2 (a), using the attached figure 2 (b) The end-pumped Z-fold cavity shown in (b), the laser crystal is Nd:YVO 4 , mirror coating M 1 : HR@1342&HT@808nm, M 2 ,M 3 : HR@134...
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