http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Mateos, Xavier,Loiko, Pavel,Choi, Sun Young,Rotermund, Fabian,Aguiló,, Magdalena,Dí,az, Francesc,Griebner, Uwe,Petrov, Valentin IOP Publishing 2017 Laser physics letters Vol.14 No.9
<P>The superior performance of a saturable absorber (SA) based on randomly-oriented single-walled carbon nanotubes (SWCNTs) operating in the spectral region of their first fundamental transition E-11 over a graphene-SA containing several (n = 3) carbon layers and a commercial semiconductor SA (SESA) for passive Q-switching of bulk thulium solid-state lasers is demonstrated. Using SWCNT-SA in a compact diode-pumped Tm:KLuW laser, a maximum average output power of 1.36 W is achieved at 1932-1944 nm corresponding to a slope efficiency of 41% and pulse characteristics of 48 ns/5.5 mu J which are superior to that for graphene-SA (123 ns/3.1 mu J) and SESA (61 ns/1.1 mu J). SWCNT-SAs are promising for eye-safe miniature lasers at similar to 2 mu m generating nanosecond pulses in the MHz repetition frequency range.</P>
Passive Q-switching of microchip lasers based on Ho:YAG ceramics
Lan, R.,Loiko, P.,Mateos, X.,Wang, Y.,Li, J.,Pan, Y.,Choi, S. Y.,Kim, M. H.,Rotermund, F.,Yasukevich, A.,Yumashev, K.,Griebner, U.,Petrov, V. Optical Society of America 2016 Applied Optics Vol.55 No.18
<P>A Ho:YAG ceramic microchip laser pumped by a Tm fiber laser at 1910 nm is passively Q-switched by single-and multi-layer graphene, single-walled carbon nanotubes (SWCNTs), and Cr2+:ZnSe saturable absorbers (SAs). Employing SWCNTs, this laser generated an average power of 810 mW at 2090 nm with a slope efficiency of 68% and continuous wave to Q-switching conversion efficiency of 70%. The shortest pulse duration was 85 ns at a repetition rate of 165 kHz, and the pulse energy reached 4.9 mu J. The laser performance and pulse stability were superior compared to graphene SAs even for a different number of graphene layers (n = 1 to 4). A model for the description of the Ho:YAG laser Q-switched by carbon nanostructures is presented. This modeling allowed us to estimate the saturation intensity for multi-layered graphene and SWCNT SAs to be 1.2 +/- 0.2 and 7 +/- 1 MW/cm(2), respectively. When using Cr2+:ZnSe, the Ho:YAG microchip laser generated 11 ns/25 mu J pulses at a repetition rate of 14.8 kHz. (C) 2016 Optical Society of America</P>
Femtosecond-laser-written Tm:KLu(WO_4)_2 waveguide lasers
Kifle, Esrom,Mateos, Xavier,de Aldana, Javier Rodrí,guez Vá,zquez,Ró,denas, Airan,Loiko, Pavel,Choi, Sun Yung,Rotermund, Fabian,Griebner, Uwe,Petrov, Valentin,Aguiló,, Magdalen The Optical Society 2017 Optics letters Vol.42 No.6
<P>Depressed-index channel waveguides with a circular and photonic crystal cladding structures are prepared in a bulk monoclinic Tm:KLu(WO4)(2) crystal by 3D direct femto-second laser writing. The channel waveguide structures are characterized and laser operation is achieved using external mirrors. In the continuous-wave mode, the maximum output power of 46 mW is achieved at 1912 nm corresponding to a slope efficiency of 15.2% and a laser threshold of only 21 mW. Passive Q-switching of a waveguide with a circular cladding is realized using single-walled carbon nanotubes. Stable 7 nJ/50 ns pulses are achieved at a repetition rate of 1.48 MHz. This first demonstration of similar to 2 mu m fs-laser-written waveguide lasers based on monoclinic double tungstates is promising for further lasers of this type doped with Tm3+ and Ho3+ ions. (C) 2017 Optical Society of America</P>
78 fs SWCNT-SA mode-locked Tm:CLNGG disordered garnet crystal laser at 2017 nm
Wang, Yicheng,Zhao, Yongguang,Pan, Zhongben,Bae, Ji Eun,Choi, Sun Young,Rotermund, Fabian,Loiko, Pavel,Serres, Josep Maria,Mateos, Xavier,Yu, Haohai,Zhang, Huaijin,Mero, Mark,Griebner, Uwe,Petrov, Val The Optical Society 2018 Optics letters Vol.43 No.17
Sub-80 fs mode-locked Tm,Ho-codoped disordered garnet crystal oscillator operating at 2081 nm
Pan, Zhongben,Wang, Yicheng,Zhao, Yongguang,Kowalczyk, Maciej,Sotor, Jarosław,Yuan, Hualei,Zhang, Yan,Dai, Xiaojun,Cai, Huaqiang,Bae, Ji Eun,Choi, Sun Young,Rotermund, Fabian,Loiko, Pavel,Serres, Jose The Optical Society 2018 Optics letters Vol.43 No.20
67-fs pulse generation from a mode-locked Tm,Ho:CLNGG laser at 2083 nm
Zhao, Yongguang,Wang, Yicheng,Chen, Weidong,Pan, Zhongben,Wang, Li,Dai, Xiaojun,Yuan, Hualei,Zhang, Yan,Cai, Huaqiang,Bae, Ji Eun,Choi, Sun Young,Rotermund, Fabian,Loiko, Pavel,Serres, Josep Maria,Mat The Optical Society 2019 Optics express Vol.27 No.3