1 results
Long-pulse, single-frequency 1064 nm laser and frequency doubling
-
- Journal:
- High Power Laser Science and Engineering / Volume 3 / 2015
- Published online by Cambridge University Press:
- 25 August 2015, e24
-
- Article
-
- You have access
- Open access
- HTML
- Export citation
-
An all-solid-state single-frequency 1064 nm laser with a
$100~{\rm\mu}\text{s}$ pulse width, 500 Hz repetition rate and 700 mJ single pulse energy is designed using seed injection and a three-stage master oscillator power amplifier (MOPA) construction. Using this as a basis, research on long-pulse laser frequency doubling is carried out. By designing and optimizing the lithium triborate (LBO) crystal, the theoretically calculated maximum conversion efficiency 
${\it\eta}_{\max }$ reaches 68% at 
$M^{2}=1$, while 
${\it\eta}_{\min }$ is 33% at 
$M^{2}=3$. Generation of 212 mJ pulses of green light with a repetition rate as high as 500 Hz is obtained from a fundamental energy of 700 mJ. The experimental conversion efficiency reaches 31% and the power stability is better than 
$\pm 1\%$.
