High brightness diode pumped Er:YAG laser system at 2.94 μm with nearly 1 kW peak power

被引：21
作者：
Messner, Manuel
Heinrich, Arne
Hagen, Clemens [1 ]
Unterrainer, Karl [2 ]
机构：
[1] Pantec Engn AG, Ind Ring 21, FL-9491 Ruggell, Liechtenstein
[2] Vienna Univ Technol, Photon Inst, Gusshausstr 27-29, A-1040 Vienna, Austria
来源：
SOLID STATE LASERS XXV: TECHNOLOGY AND DEVICES | 2016年 / 9726卷
关键词：
Er:YAG; medical laser; ablation; diode pumped; mid-infrared; fiber coupled;
D O I：
10.1117/12.2209098
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrated a monolithic high-power diode-pumped Er:YAG laser at 2.94 mu m with average output power of up to 50 W and pulse energy beyond 300 mJ in 400 ps pulses. The high peak power of nearly 1 kW is delivered in a high quality beam (M-2 < 15), maintained over a large cooling water temperature range of 18-25 degrees C. The improved resonator configuration allows for stable operation from 0-10 % duty-cycle in contrast to prior developments showing saturation. As a first application, fiber-coupling into a 230 mu m, 0.2 NA GeO2-fiber with standard optics has been shown, reaching 30W average power and 200 mJ pulse energy out of the fiber, only limited by the fiber.
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页数：6
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