Abstract
The advantages of simultaneous side and end diode pumping of Nd:YAG laser to enhance the spatio-temporal characteristics in the Q-switched mode of operation has been demonstrated. It has been shown that using a hybrid pump geometry in a short linear resonator provides a superior combination of output beam optical quality, energy, and pulse duration in contrast to the solitary use of an end-pump or a side-pump scheme at similar levels of average output power. We have demonstrated a compact single active rod Nd:YAG laser design in Q-switching mode with a pulse duration of 18 ns, pulse energy up to 3mJ, a repetition rate of 8 kHz, and М2 <2.
Highlights
Q-switched lasers are widely used for many research and technological applications such as precision surface treatment, engraving, micro- and nano-scale surface structuring/patterning, laser peening etc
The most impressive progress in developing sources with the output power on the order of several watts, up to tens of kilowatts and good output beam quality has been achieved in fiber lasers with a diode pumping [2]
For a number of applications the laser should operate in a high-frequency pulsed-periodical mode when the maximum achievable pulse energy at the shortest possible pulse duration is required
Summary
Q-switched lasers are widely used for many research and technological applications such as precision surface treatment, engraving, micro- and nano-scale surface structuring/patterning, laser peening etc. For a number of applications the laser should operate in a high-frequency pulsed-periodical mode when the maximum achievable pulse energy at the shortest possible pulse duration is required To achieve this goal in Q-switched operation mode, the gain factor of the active medium should be well above the lasing threshold at the moment when the generated pulse starts and the cavity roundtrip time (i.e. cavity optical length) should be as short as possible. An alternative method to achieve simultaneously high average and peak power with relatively short pulse duration and high beam brightness is to combine transverse- and longitudinal diode pumping of the active rod. This approach benefits for getting advantages of the both pump laser technologies. We report the results of numerical simulation of the suggested approach and the experimental realization with commercially available components is presented as well
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
