Nd:YAG single-crystal fiber as high peak power amplifier of pulses below one nanosecond

Abstract

We explore the potential of Nd:YAG single-crystal fibers for the amplification of passively Q-switched microlasers operating below 1 ns. Different regimes are tested in single or double pass configurations. For high gain and high power amplification this novel gain medium provided average powers up to 20 W at high repetition rate (over 40 kHz) for a pulse duration of 1 ns. As an energy amplifier, Nd:YAG single-crystal fiber delivered 2.7 mJ, 6 MW 450 ps pulses at 1 kHz. The extraction efficiencies vary from 8% to 32.7% following the configurations.

Megawatt peak power, 1 kHz, 266 nm sub nanosecond laser source based on single-crystal fiber amplifier

“…The 1,064 nm amplified laser system is described in detail in [4]. It is composed of a microchip laser amplified with a Nd:YAG SCF in double pass configuration.…”

“…In the past few years, single-crystal fiber (SCF) technology has proved to be an interesting solution to boost the performance of passively Q-switched microchip lasers [4]: it provides unique combination of high gain, high peak power and significant average power, with the most simple amplification scheme possible (one or two passes).…”

“…In this paper, we present a 266 nm UV source based on the fourth harmonic generation of a Nd:YAG SCF MOPA previously developed [4].…”

Growth and spectroscopic properties of Ti-doped sapphire single-crystal fibers

“…Due to the short distance between the pumping region and surrounding temperature, the fiber crystal can remove heat efficiently. Owing to the long (typically 50 mm) and thin (typically U < 1 mm) properties, fiber crystal can confine the pump beam by guiding and be able to propagate the signal beam in free space without guiding or diffraction [22]. Taking into account these advantages, we plan to develop Ti:Al 2 O 3 single-crystal fibers with l-PD technique, and investigate its spectroscopic properties.…”

3.3&#x2013;3.7 &#x03BC;m Nested cavity OPO pumped by an amplified micro-laser for portable DIAL

“…The high gain amplifier is a Taranis, Nd doped -YAG fiber module from Fibercryst. Such a fiber amplifier had been already tested successfully to amplify sub nanosecond passively Qswitched microlasers [4]. The type 0 PPLN NesCOPO device allows 3.3 -3.7 μm coverage.…”