Diode-pumped passively mode-locked Nd:YVO/sub 4/ lasers with 40-GHz repetition rate

Abstract

We present two different diode-pumped passively mode-locked Nd:YVO 4 lasers with a repetition rate of 40 GHz. This is the highest repetition rate demonstrated so far with diode-pumped 1-m solid-state lasers. The first laser design allows short pulses of 2.7-ps duration whereas the second laser design is optimized for high average output power of up to 288 mW. We compare both design approaches and show that there is a tradeoff between output power and pulse duration.

Patterning Properties of Indium–Tin Oxide Layer Depending on the Irradiation Conditions of Nd:YVO4 Laser Beam

“…1. The laser used is a diode-pumped, single-mode, Q-switched Nd:YVO 4 solid-state laser with a wavelength of 1064 nm, 6,7) a pulse duration of ¼ 10 ns full width at half maximum (FWHM), and a pulse repetition rate within 0 -200 kHz. The maximum output pulse energy of the laser is 500 mJ with a beam spot size of about 40 mm.…”

Ultrafast (picosecond) laser oscillator for educational use

“…Although a vanadate crystal can be pumped and emit at different wavelengths, we use the most traditional configuration consisting of diode pumping into the strongly absorbing 4F 5/2 level at 808 nm and emitting at 1064 nm wavelength. The broad linewidth of 0.8 nm at this emission wavelength allows us to routinely achieve pulse durations on the order of 10 ps [4].…”

High power diode-pumped passively mode-locked Nd:YVO4 laser at repetition rate of 3.2 GHz*

“…[6] Using this structure, Lecomte et al realized a diode-pumped modelocked laser with a repetition rate of 40 GHz and an average power of 288 mW. [8] Other approaches can also realize highrepetition-rate picosecond lasers. Liang et al demonstrated a Kerr-lens mode-locked diode-pumped Nd:YVO 4 laser with a repetition rate of 6 GHz and an average power of 0.8 W. [9] Other kinds of gain media have also been demonstrated to be used to generate the high-repetition-rate picosecond lasers.…”