Chi Mingjun, Jensen Ole Bjarlin, Holm Jesper, Pedersen Christian, Andersen Peter Eskil, Erbert Götz, Sumpf Bernd, Petersen Paul Michael
Opt Express. 2005 Dec 26;13(26):10589-96. doi: 10.1364/opex.13.010589.
A high-power narrow-linewidth laser system based on a tapered semiconductor optical amplifier in external cavity is demonstrated. The external cavity laser system uses a new tapered amplifier with a super-large optical-cavity (SLOC) design that leads to improved performance of the external cavity diode lasers. The laser system is tunable over a 29 nm range centered at 802 nm. As high as 1.95 W output power is obtained at 803.84 nm, and an output power above 1.5 W is achieved from 793 to 812 nm at operating current of 3.0 A. The emission linewidth is below 0.004 nm and the beam quality factor M2 is below 1.3 over the 29 nm tunable range. As an example of application, the laser system is used as a pump source for the generation of 405 nm blue light by single-pass frequency doubling in a periodically poled KTiOPO4. An output power of 24 mW at 405 nm, corresponding to a conversion efficiency of 0.83%/W is attained.
展示了一种基于外腔锥形半导体光放大器的高功率窄线宽激光系统。该外腔激光系统采用了一种具有超大光腔（SLOC）设计的新型锥形放大器，这使得外腔二极管激光器的性能得到了改善。该激光系统在以802nm为中心的29nm范围内可调谐。在803.84nm处获得了高达1.95W的输出功率，在3.0A的工作电流下，在793至812nm范围内实现了高于1.5W的输出功率。在29nm可调谐范围内，发射线宽低于0.004nm，光束质量因子M2低于1.3。作为应用示例，该激光系统用作泵浦源，通过在周期性极化的KTiOPO4中单次倍频产生405nm蓝光。在405nm处获得了24mW的输出功率，对应转换效率为0.83%/W。
