IRAQI JOURNAL OF APPLIED PHYSICS Vol. 21, No. 2, April-June 2025, pp. 209-216 Optimization of Diode Laser Eman A. Saied Samira Y. Asoka Q-Switching Using Optical Amange F. Boya Choppers for Improved Rhodamine B Degradation Choppers are optomechatronic...
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IRAQI JOURNAL OF APPLIED PHYSICS Vol. 21, No. 2, April-June 2025, pp. 209-216 Optimization of Diode Laser Eman A. Saied Samira Y. Asoka Q-Switching Using Optical Amange F. Boya Choppers for Improved Rhodamine B Degradation Choppers are optomechatronic instruments employed to modulate laser light by Department of Physics, generating pulses with unique profiles. This study investigates six chopper designs with College of Science, Salahaddin University - Erbil, rotating wheels, focusing on mechanical active Q-switching modulation to convert Erbil, Kurdistan Region, IRAQ continuous wave diode lasers into Q-switching lasers. Four of the designs feature single and dual frequencies, while the remaining two are harmonic frequency optical chopper blades. The research examines key pulse characteristics, such as duration, which range from 9.38 ns to 1.034 μs for single- and dual-frequency choppers. The maximum peak power recorded was 68.98 kW for harmonic oscillation choppers, while the minimum w
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