Passively mode-locked Yb³⁺:Sc₂SiO₅ laser with reflection-type single-walled carbon nanotube absorber

Abstract

A reflection-type single-walled carbon nanotube saturable absorber fabricated by a vertical evaporation method was to our knowledge first used in a passively mode-locked Yb(3+):Sc(2)SiO(5)(Yb:SSO) laser. The laser operated at a repetition frequency of 94 MHz with a central wavelength of 1062.6 nm. A short pulse duration of 1.8 ps was produced with an average power of 349 mW; and the highest pulse energy of 3.7 nJ, corresponding to its maximum peak power, can reach 2.1 kW.

Two‐dimensional graphdiyne for passively Q‐switched Yb3+:Sc2SiO5 laser

“…Just because so many advantages, it has become a popular gain medium in the research of ultrashort pulsed lasers. For the past few years, people have developed continuous wave (CW) laser, mode‐locked laser and chirped pulse amplifier with Yb:SSO crystal 9–17 . However, there is no report of passively Q‐switched Yb:SSO crystal laser up until now, to our knowledge.…”

1357 nm passively Q-switched crystalline ceramic laser based on multilayer graphene

“…Traditionally, semiconductor SAs and doped crystals (such as Cr 4+ :YAG, V 3+ :YAG, Co 2+ :LaMgAl11O9, etc) have been employed to modulate solid state or micro lasers, which have been widely investigated and have been proved to be suitable for realizing stable nanosecond laser pulses [4][5][6][7]. Compared with the SAs mentioned above, graphene can adapt to any excitation wavelength due to gapless linear dispersion of Dirac electrons [8][9][10]. In addition, owing to its properties of high damage threshold, low cost and ultra-fast carrier dynamics, the solid state passively Q-switched laser has been investigated by using graphene SAs [11][12][13][14].…”

A 1.7-ps pulse mode-locked Yb 3 + :Sc 2 SiO 5 laser with a reflective graphene oxide saturable absorber

“…[1,2] The saturable absorber (SA) is a very important modulation element to generate passively mode locked pulses. So far, the semiconductor saturable absorber mirrors (SESAMs), [1,[3][4][5] carbon nanotubes (SWNTs) [6][7][8][9] and graphene [10][11][12][13][14] SAs have been extensively investigated. In addition, some new types of saturable absorbers have been demonstrated as passively mode locked saturable absorbers.…”

“…Up to now, mode-locked Yb:SSO lasers have been demonstrated by using SESAMs [5] and carbon nanotubes. [8,9] In the present work, using a reflective graphene oxide as the saturable absorber, we are first to demonstrate a passively mode-locked Yb:SSO laser. The laser operated at 1062.6 nm with repetition frequency of 94 MHz.…”