Diode pumped operation of tm, Ho:YAP microchip laser

Microchip laser operation of Tm,Ho:KLu(WO_4)_2 crystal

“…The beam quality factor M 2 for the Tm,Ho:KLuW microchip laser was below 1.1. The reported results for the diode-pumped Tm,Ho:KLuW microchip laser are superior compared to all previous demonstrations with diode-pumped Tm,Ho-codoped YAP [15], YVO 4 or GdVO 4 [17,18], both in terms of output power and slope efficiency. In comparison with the state-of-the-art for Tm,Ho:YLF [13], we achieved 1.5-times increase of the output power.…”

“…The presented results surpass all previous reported diode-pumped Tm,Hocodoped microchip lasers with repect to the output power performance [12][13][14][15][16][17][18]. The laser generates 451 mW of CW output power at 2081 nm with a maximum slope efficiency of 31% (optical-to-optical efficiency of 16%).…”

“…The single longitudinal mode (SLM) regime was observed in [14]. A diode-pumped Tm,Ho:YAP microchip allowed for the generation of ~170 mW with a moderate slope of 6% which increased to 12% at 77 K [15]. SLM operation with Tm,Ho:YAP was also reported [16].…”

High efficiency Tm3+ fiber laser of seed amplification

“…Cladding-pumped Tm 3+ -doped fiber lasers have many advantages to provide high power laser at the wavelength approximate 1.9 m region than solid state lasers, due to the high output power, good beam quality, compact fabric, wide tunable range, and high conversion efficiency [14,15]. Using the dichroic as the reflection coupler, Optical Fiber Technology Centre of University of Sydney reported their 120 W output power with slope efficiency of 57% from a 4 m-long Tm 3+ -doped silica glass fiber pumped at both fiber ends by two 793 nm LD [16]. With two dichroics establishing the cavity, the National Laboratory of Tunable Laser Technology of Harbin Institute of Technology obtained 8.4 W output power at approximately 2 m with a slope efficiency of 57% from a 1.7 m long Tm 3+ -doped LAM fiber in 2006 [17].…”

Passive Q-switching of a Tm,Ho:KLu(WO_4)_2 microchip laser by a Cr:ZnS saturable absorber

“…Such a compact, robust, and misalignment-free design provides low intracavity losses and high laser efficiency. Continuous wave (CW) Tm,Ho microchip lasers were realized with a number of hosts such as LiYF 4 , YAlO 3 , YVO 4 , and GdVO 4 [8][9][10][11][12]. Recently, we studied potassium lutetium double tungstate, KLuWO 4 2 or KLuW for short, which has proved to be very suitable host for rare earth doping [13].…”