Continuous-wave mode-locked 2-μm Tm: YAG laser

Abstract

Continuous-wave mode-locked operation of a 2-microm Tm: YAG laser is demonstrated. Stable, transform-limited pulses of 35-ps duration have been generated at a repetition rate of 300 MHz, with an average output power of 70 mW.

A simple method to estimate the thermal focal length of LD-end-pumped Tm:YAG crystal at room temperature

“…Recent years, laser action in trivalent thulium (Tm 3+ ) has been developed rapidly for its applications in medicine and remote sensing [1,2]. The upper laser level ( 3 F 4 ) is excited through the cross-relaxation process 3 H 4 + 3 H 6 → 3 F 4 + 3 F 4 , which means that for each photon absorbed in the 3 H 4 level, two Tm 3+ ions will be excited to 3 F 4 level.…”

Structural and optical properties of Tm:Y2O3 transparent ceramic with La2O3, ZrO2 as composite sintering aid

“…[1][2][3][4] Traditional host materials for Tm 3+ active ion are YAG single crystals, [5][6][7] which have been highly developed because of their easy fabrications and profound investigations. Some other Tm 3+ doped crystals such as vanadates 8 and YAP single crystals have been investigated.…”

Passively mode-locked Tm,Ho:YVO4 laser based on a semiconductor saturable absorber mirror

“…Both Tm 3+ and Tm 3+ Ho 3+ co-doped bulk crystals can be employed as gain media to generate picosecond or femtosacond pulses in this range. Actively mode-locked lasers have been successfully demonstrated since 1 990s in bulk crystals such as Tm:YAG [1] , Cr,Tm:YAG [2] , Tm,Ho:BaY 2 F 8 [3] , and Tm,Ho:LiYF 4 [4] . Passively mode-locked (PML) bulk lasers, which had the advantages of simplicity and compactness, were obtained in Tm:KLu(WO 4 ) 2 [5] and Tm:YLF [6] based on singlewall carbon nanotube.…”