1650nm special wavelength solution: the key role of fiber AOM in infrared laser systems
1650nm special wavelength solution: the key role of fiber AOM in infrared laser systems
Blog Article
At present, with the continuous evolution of infrared laser technology, the 1650nm wavelength has emerged in many fields due to its unique advantages. The fiber optic acousto-optic modulator (AOM), as a key component of infrared laser systems, plays an irreplaceable role in the precise control of 1650nm lasers and provides high-performance special wavelength solutions for many industries.
1650nm wavelength: A "potential stock" in the infrared field
1650nm is in the infrared band and has good penetration and low loss characteristics. In optical fiber communication, this wavelength window can effectively reduce signal attenuation, extend transmission distance and increase communication capacity. It is an ideal choice for long-distance backbone networks and submarine optical cable communication. In the field of biomedicine, 1650nm infrared light has an appropriate penetration depth into human tissues and can be used for non-invasive detection and treatment, such as angiography and photothermal therapy. It can not only obtain information deep into the tissues but also reduce damage to the surface tissues. In terms of environmental monitoring, it has a unique absorption spectrum for specific gases (such as methane, etc.), which can be used for high-precision gas concentration detection, facilitating the monitoring of air pollution and the research on greenhouse gas emissions.
Fiber AOM: The "Precise Helmsman" of 1650nm laser
Core functions of frequency and intensity modulation
Optical fiber AOM is based on the acousto-optic effect. It drives piezoelectric transducers through radio frequency signals to generate ultrasonic waves in the acousto-optic medium, thereby forming a dynamic refractive index grating. When a 1650nm laser passes through, Bragg diffraction occurs, achieving frequency and intensity modulation. In liDAR systems, AOM utilizes frequency modulation to endow the emitted laser with precise frequency shifts. By analyzing the Doppler frequency shifts of the echo laser, it can accurately measure the distance, speed and Angle of the target. In applications such as autonomous driving and topographic mapping, it provides high-precision data support for vehicle navigation and map drawing. In the field of laser processing, AOM rapidly modulates the intensity of 1650nm laser and precisely controls the laser energy output to achieve fine cutting, drilling and welding of materials. For instance, in the manufacturing of microelectronic chips, it can process micron-level fine structures.
Advantages of low insertion loss and high extinction ratio
The 1650nm optical fiber AOM features low insertion loss, with some models having insertion loss less than 2.5dB, ensuring minimal energy loss during the laser modulation process and allowing more energy to be utilized for effective operation, thereby enhancing system energy efficiency. The high extinction ratio (≥50dB) clearly distinguishes the "on - off" states of the laser. In scenarios such as optical communication signal modulation and optical measurement, high-contrast optical signals can reduce bit error rates and improve measurement accuracy. In long-distance optical time-domain reflectometers, clear optical pulse signals can accurately detect optical fiber fault points and ensure the stable operation of communication networks.
Ultra-fast response: Capture momentary changes
The AOM rise time of some 1650nm optical fibers is less than 12ns, and the ultra-fast response can quickly track and modulate the high-speed changing laser signal. In ultrafast laser experiments, the 1650nm femtosecond and picosecond laser pulses can be precisely controlled to study the ultrafast dynamic processes of substances, such as detecting electron transitions and chemical bond vibrations within molecules, providing key technical means for cutting-edge research in materials science, chemical physics, and other fields. In optical heterodyne interferometry, it can respond to the changes of interference signals in real time, improve measurement accuracy and speed, and meet the high-precision detection requirements of parameters such as tiny displacements and surface roughness in precision manufacturing.
Multi-scenario application: Unleashing the AOM value of 1650nm optical fiber
Upgrading of industrial manufacturing
In the manufacturing of automotive parts, 1650nm fiber AOM-assisted infrared laser welding, with its precise energy control and rapid modulation, achieves high-quality connection of dissimilar materials such as aluminum alloy and steel, enhancing the welding strength and appearance quality. In the aerospace field, when laser cutting carbon fiber composites, the 1650nm laser modulated by AOM can reduce material delamination and carbonization, ensuring the processing accuracy and performance of structural components.
Biomedical innovation
In ophthalmic laser surgery, the 1650nm fiber AOM precisely controls the laser energy and pulse width, which is used for retinal repair, glaucoma treatment, etc., reducing thermal damage to surrounding tissues and improving the safety and effectiveness of the surgery. In biological tissue imaging, modulated lasers, when combined with confocal microscopes and other equipment, can obtain high-resolution and deep tissue images, facilitating the early diagnosis of diseases and drug development.
Scientific research exploration helps
In quantum optics experiments, 1650nm optical fiber AOM is utilized to generate lasers of specific frequencies and intensities, which are applied in research such as the preparation of quantum entangled states and quantum key distribution, promoting the development of quantum communication and quantum computing technologies. In the research of atomic and molecular physics, AOM-modulated lasers enable precise manipulation and spectral measurement of atoms and molecules, explore the mysteries of the microscopic world, and provide a theoretical basis for the development of new materials and energy technology innovation.
1650nm fiber AOM, as the core of special wavelength solutions, injects powerful impetus into infrared laser systems from fundamental principles to multi-scenario applications. With continuous technological innovation, it will unleash its potential in more fields, becoming a key force driving the advancement of infrared laser technology and the intelligent upgrade of various industries, and opening a new chapter in the application of the 1650nm wavelength. Report this page