Development and analysis of saturable absorber from plant leaf for q-swtiched fibre laser generation

Mohd Nasir, Amal Muaz (2022) Development and analysis of saturable absorber from plant leaf for q-swtiched fibre laser generation. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project is about the development and analysis on organic material by generating a Q-switched pulse laser as a passive element in Saturable Absorber (SAs) for photonics technology. The saturable-absorption performance being analyze with the prepared SAs within the C-band region (1.55micron wavelength region). These Q-switched pulse lasers, being analyze with the usage of two SA’s material which is from Spent Coffee Ground (SCG) film and plant leaf film (from eggplant leaf), with the slope efficiency of 0.95% and 2.35% respectively. For the SCG, the maximum repetition rate is 43.75 kHz, shortest pulse width of 8 μs and pulse energy up to 12.8 nJ. The maximum repetition rate of 38.61 kHz, shortest pulse width of 10.7 μs and pulse energy up to 31.34 nJ for the plant leaf film. The maximum power output generated was 0.56 mW and 1.21 mW respectively for SCG and plant leaf SA’s.

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