§2.10非稳腔的几何自再现波型 Operation in the stable regime has been shown to lead to narrow gaussian beams This situation is not compatible with the need for high-power output that requires large lasing volumes The nature of the coupling results in an output beam with a large aperture that is consequently well collimated without the use of telescoping optics§2.10 非稳腔的几何自再现波型 •Operation in the stable regime has been shown to lead to narrow Gaussian beams. This situation is not compatible with the need for high-power output that requires large lasing volumes. •The nature of the coupling results in an output beam with a large aperture that is consequently well collimated without the use of telescoping optics