640-nm Pr:YLF regenerative amplifier seeded by gain-switched laser diode pulses

Yusaku Hara, Shogo Fujita, Yuta Shioya, Fumihiko Kannari

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We demonstrated the regenerative amplification of picosecond laser pulses generated by a gain-switched laser diode at 640 nm with a Pr:YLF crystal that was continuously pumped by a multimode blue laser diode. A 0.7-pJ seed pulse energy sufficiently suppressed the self-oscillation in the amplifier. The amplified pulse energy reached 33 µJ at a repetition rate of 10 kHz. The spatial beam quality was nearly TEM00. We also demonstrated second- and third-harmonic generation and obtained 320- and 213-nm pulse energies of 18 and 0.83 µJ at 10 kHz.

Original languageEnglish
Pages (from-to)5098-5101
Number of pages4
JournalApplied Optics
Issue number17
Publication statusPublished - 2020 Jun 10

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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