Because the plasmons generated by a SPASER would be much more tightly localized than a conventional laser beam, the device could operate at very low power and selectively excite very small objects.

• 由于SPASER装置产生的电浆子活动空间比传统雷射光束小得多，仅需极小的功率即可运作，同时也可激发极小的物体。