Triboelectric nanogenerators (TENGs) are promising cost-effective energy harvesters useful to scavenge vibration or mechanical movements from various domains. Ranging from condition monitoring of machines to motion sensing of humans, its applications are enormous in the IoT scenario. Enhancing the performance of small-sized TENGs is of great demand, and pulsed laser-assisted texturing is an efficient and proven method to enhance the output of energy harvesters. This work studied simultaneous laser patterning of FEP dielectric material and the underneath Copper electrode with 3 different wavelengths (355, 532 and 1064 nm) of the Nd3+:YAG laser and the device’s electrical performance was analyzed. The maximum enhancement was observed in the case of 355 nm laser-assisted patterning on FEP and Cu electrode with a laser fluence of 10 J cm-2. The improvement was least in the case of 1064 nm laser-assisted patterning. Laser-patterning on the underlying electrode with this new approach was able to produce an enhancement in the TENG output. But, patterning on the FEP top surface is critical in the process.