Fiber Coupled Red Lasers

Fiber - Coupled Red Lasers at 635nm are widely used in biomedical applications due to their unique optical properties and advantages. 

• Working Principle: These lasers emit red - light at a wavelength of 635nm. This wavelength has good penetrability and specific absorption characteristics in biological tissues. It can interact with biological molecules, cells, and tissues, and trigger a series of physical and chemical reactions, such as photochemical reactions and thermal effects, so as to play a role in biomedical applications.

• Main Features2:

◦ High - power Output Options: There are various power levels available, such as 300mW, 800mW, and can even reach 5000mW or more, which can meet different application requirements.

◦ Narrow Line - width: The line - width is usually within ±3nm, with a stable wavelength of 635 ± 3nm, which ensures the accuracy and stability of the laser in biomedical applications.

◦ High Coupling Efficiency: It can be coupled with fibers with core diameters of 105μm and 200μm, and the numerical aperture is 0.22, which can effectively transmit laser energy to the target area and improve energy utilization efficiency.

• Biomedical Applications:

◦ Photodynamic Therapy (PDT): PDT uses the photochemical reaction triggered by laser irradiation to activate photosensitizers. The 635nm red light has a high affinity for collagen fibers and melanin, and has little interaction with hemoglobin. It can selectively destroy diseased tissues, such as acne, tumors, venous malformations, and oral diseases, and has the advantages of minimally invasive or non - invasive, high treatment accuracy, and less pain for patients.

◦ Biological Tissue Ablation1: The 635nm fiber - coupled red laser can be used for high - precision and high - quality biological tissue ablation. If it is a femtosecond - level laser, it can also perform cold ablation during material processing, without generating thermal effects, and can perform cleaner cutting, which is suitable for some minimally invasive surgical operations.

◦ Biomedical Detection and Microscopy7: It can be used as a light source in biomedical detection, such as flow cytometry, DNA sequencing, Raman spectroscopy, etc. In addition, it also has potential applications in two - photon excitation microscopy, which can help observe the fine structure and physiological processes of biological tissues at the microscopic level.

◦ Promote Tissue Repair and Regeneration9: This kind of laser can promote blood circulation and tissue repair. The 635nm red light can act on collagen components, directly transfer heat to collagen fibers, promote the immediate contraction and denaturation of collagen, and at the same time activate fibroblasts to produce new collagen, which is helpful for skin repair and regeneration, and can also be used in the treatment of some eye diseases, such as promoting the development of cone cells on the retina and improving their activity, alleviating eye fatigue, dry eye and other symptoms.

• Product Advantages:

◦ Compact and Portable: The fiber - coupled design makes the laser device more compact, and the overall volume is small5. It is easy to integrate into various medical equipment, and some can also be designed as handheld devices, which is convenient for doctors to operate.

◦ High Reliability4: It has a long - service life, and the expected service life of some products can exceed 10,000 hours, which can reduce the replacement cost and maintenance workload.

◦ Easy to Operate5: The operation is simple, and it is easy to learn and use, and is suitable for different medical staff to use. At the same time, some lasers also have functions such as intelligent temperature control and automatic protection, which can ensure the stability of medical applications.