| Summary: | Currently, diode lasers in the red wavelength region, especially
at 650 nm, are extensively utilized in phototherapy and
photodynamic inactivation of bacterials by numerous research
groups in the field of lasers for biomedical application. These
devices offer exceptional advantages, such as their compact size,
ease of design and integration, user-friendliness, and high safety
for both operators and patients. Among these, fiber-coupled
diode lasers provide an efficient solution for delivering radiation
from the laser chip to the desired location. However, further
optimization is still required for the fabrication technological
development of these devices to meet specific application needs.
This includes aspects like reducing manufacturing costs,
improving component usability during operation, and meeting
specialized usage requirements. To develop the technology for
device fabrication, addressing the aforementioned demands, we
conducted research on the design, fabrication, and
characterization of fiber-coupled semiconductor lasers
operating at a wavelength of 650 nm. The characterization
results demonstrate that the manufactured devices can operate at
maximal pumping current of 100 mA and under varying
temperatures from 25oC to 40oC. Additionally, a radiation
output orientation module has been designed and integrated at
the end of the optical fiber to meet various demands in
phototherapy and photodynamic inactivation of bacterials.
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