Continuous-wave passively mode-locked diode end-pumped Nd:YVO4 laser with a semiconductor saturable absorber mirror

Zhi Qiang Cai, Wu Qi Wen, Jian Quan Yao, Yong Gang Wang, Zhi Gang Zhang, Xin Ding, Jian Yong Zhou, Jia Ning Zhou, Jun Li, Peng Wang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A diode end-pumped passively mode-locked Nd:YVO4 picosecond laser with home made semiconductor saturable absorber mirror (SESAM) is presented. By choosing a low-transmission output coupler and extending the cavity length, the Q-switching mode-locked pulses are suppressed and the proportion of direct current is decreased in V shaped resonator. When the cavity length is increased from 0.66 m to 1.27 m and 1.86 m, the proportion of direct current is decreased from 52% to 13.6% and 0.3%. At last, the stable continuous mode-locked pulses are attained and the pulse repetition rate is 80 MHz. The spectral width is measured to be 0.15 nm. Considering the thermal effect of the crystal, a four-mirror Z-cavity is designed using the matrix method. Average output power of 1 W at a pulse repetition rate of 150 MHz is obtained. The benefit and disadvantage of the V-shaped cavity and the four-mirror Z-cavity are compared and analyzed.

Original languageEnglish
Pages (from-to)734-738
Number of pages5
JournalZhongguo Jiguang/Chinese Journal of Lasers
Volume32
Issue number6
StatePublished - Jun 2005
Externally publishedYes

Keywords

  • Continuous wave mode-locked
  • End-pumped
  • Laser technique
  • Nd:YVO laser
  • Semiconductor saturable absorber mirror

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