Abstract
An intracavity frequency doubling acousto-optically Q-switched Neodymium-doped Yttrium Orthvanadate (Nd:YVO4) 457 nm blue laser by employing a three-mirror folded cavity was demonstrated. With the incident pump power of 40.4 W, the maximum average output power of 439 mW 457 nm laser, and the minimum pulse duration of 86.14 ns and the maximum peak power of 510 W were achieved at 10 kHz. The M2 factors are 1.23 and 1.61 in X and Y directions, respectively. The power stability in two hours is better than 2%.
Highlights
All-solid-state blue and green lasers have a wide range of applications in ocean exploration systems, such as laser depth sounding, laser underwater communication, underwater target detecting, and seawater optical properties detecting [1] [2] [3]
With the incident pump power of 40.4 W, the maximum average output power of 439 mW 457 nm laser, and the minimum pulse duration of 86.14 ns and the maximum peak power of 510 W were achieved at 10 kHz
The power stability in two hours is better than 2%
Summary
All-solid-state blue and green lasers have a wide range of applications in ocean exploration systems, such as laser depth sounding, laser underwater communication, underwater target detecting, and seawater optical properties detecting [1] [2] [3]. High peak power neodymium-doped all-solid-state 473 nm and 486.1 nm lasers have made great progress [4] [5]. The researches of all-solid-state deep blue lasers at 457 nm, 456 nm and 453 nm were relatively weak [6] [7] [8]. Compared with the 473 nm and 486.1 nm laser, the 457 nm laser is more suitable for deep seawater detection. Frequency doubling from a 0.9 μm quasi three-level transition of neodymium-doped laser gain medium is a common method to get a deep blue laser.
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