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

Yusaku Hara; Shogo Fujita; Yuta Shioya; Fumihiko Kannari

doi:10.1364/AO.395801

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

Yusaku Hara, Shogo Fujita, Yuta Shioya, Fumihiko Kannari

Department of Electronics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	5098-5101
Number of pages	4
Journal	Applied Optics
Volume	59
Issue number	17
DOIs	https://doi.org/10.1364/AO.395801
Publication status	Published - 2020 Jun 10

ASJC Scopus subject areas

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

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abstract = "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.",

author = "Yusaku Hara and Shogo Fujita and Yuta Shioya and Fumihiko Kannari",

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AU - Kannari, Fumihiko

PY - 2020/6/10

Y1 - 2020/6/10

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AB - 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.

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