Q-geschalteter Laserbearbeitungsmaterial-Energiespeicher
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Diese Proportionalitätskonstante zwischen der Wärme Q, die das Objekt Energiespeicher auf atomarer Ebene schließt Energie ein, die mit Elektronenorbitalzuständen verbunden ist. Unabhängig davon, ob eine chemische Reaktion Energie absorbiert oder freisetzt, ändert sich die Energiemenge während der Reaktion insgesamt nicht.
What is the peak power of a Q-switched Er-Yb-glass microchip laser?
In 2003, Denker et al. , , pumped an Er:Yb:glass using a pigtailed laser diode and obtained a laser with a pulse train of 5 ns, peak power of 1.4 kW, pulse repetition rate of 70 kHz, and maximum average power of 180 mW, which is the highest reported for Q-switched Er:Yb:glass microchip lasers.
What is a Q-switched microchip laser?
Passively Q-switched microchip lasers have reached pulse durations far below 1 ns and repetition rates up to several megahertz, whereas large (typically amplified) laser systems can deliver pulses with many kilojoules of energy and durations in the nanosecond range. Lasers to which the Q-switching technique is applied are called Q-switched lasers.
Which saturable absorber provides a passively Q-switched laser operation?
The Cr 2+ :ZnSe saturable absorber inside the laser cavity provided a passively Q-switched operation, the PRR and the PW were 2–10 kHz and 85–120 ns, respectively. The repetitively pulsed operation of the passively Q-switched ceramic laser with the average power of up to 1.3 W with the slope efficiency of 40% was achieved.
What is Q switching in laser resonator?
Q switching is a technique for obtaining energetic short (but not ultrashort) light pulses from a laser by modulating the intracavity losses and thus the Q factor of the laser resonator. The technique is mainly applied for the generation of nanosecond pulses of high energy and peak power with solid-state bulk lasers.
How does a Q-switched laser work?
In most cases, Q-switched lasers generate regular pulse trains via repetitive Q switching. The pulse repetition rate is typically in the range from 1–100 kHz, sometimes higher.
What is Q-switched Thulium-doped fiber laser based on?
Wang, M. et al. Passively Q-switched thulium-doped fiber laser based on oxygen vacancy MoO 3-x saturable absorber. Opt. Mater. Express 9, 4429–4437 (2019). Rahman, M. F. A. et al. Q-switched and mode-locked thulium-doped fiber laser with pure antimony film saturable absorber. Opt. Commun. 421, 99–104 (2018).