In special work fields of scientific research and material processing works, the 1064nm single mode laser diode is projecting high beam quality single mode output with small beam divergence angle and uniform light spot emission. It can meet the needs of precision measurement and microscopic manipulation in scientific research, as well as the requirement of nano-level precision in material processing, reducing experimental errors and processing defects. In practical experimental fields, 1064nm near infrared laser light has a high absorption rate for most non-metallic materials (such as glass, plastic) and some metals, and has low transmission loss in air and transparent media, which is suitable for long-distance optical path experiments (such as interferometry) and deep penetration processing.
The 1064nm single mode infrared laser diode structure is small size and low in power consumption. It is easily integrated with optical fiber, spectrometer, processing platform and other equipment. It is suitable for building miniaturized scientific research equipment or automated processing systems to reduce experimental/production costs. When it is selected with correct output power based on the real work distance, it can maintain small power fluctuation of less than 2% and small wavelength drift, which can ensure the consistency of long term experiments, such as continuous spectrum acquisition for several hours or batch processing, and reduce data deviation and product differences.
Owing to its near infrared wavelength selection, 1064nm single mode infrared laser diode gets featured advantages of excellent temporal coherence (monochromaticity) and spatial coherence in the application fields of interference experiments, holographic imaging, and precision ranging, and can clearly record small phase changes or structural details. The output power can be accurately adjusted by current, and the modulation technology can realize pulse/continuous output switching, which is suitable for different scenarios (such as pulse excitation in scientific research and continuous cutting in processing).
Applications in scientific experiment and research:
Spectroscopic research: 1064nm single mode laser diode is used as an excitation light source for experiments such as Raman spectroscopy and photoluminescence spectroscopy. The 1064nm near-infrared wavelength can reduce the fluorescence background interference of the sample, and the single-mode characteristic ensures the stability of the excitation light and improves the signal-to-noise ratio of the spectral signal. It is suitable for analyzing low-fluorescence or high-scattering samples (such as carbon materials and biological tissues).
Quantum optics and precision measurement: used for atomic/molecular manipulation (such as laser cooling, Bose-Einstein condensation experiments), interferometry (such as Michelson interferometers, gravitational wave detection auxiliary research). The high coherence (temporal and spatial coherence) of 1064nm single-mode infrared laser diode can accurately control the optical path difference to meet the needs of quantum state regulation and nanometer-level precision measurement.
Nonlinear optical experiments: As a pump source to drive second harmonic generation (SHG), optical parametric oscillation (OPO) and other processes, generate wavelengths such as 532nm green light and 355nm ultraviolet light, and expand the scope of laser application; the high energy concentration of single-mode beams can improve the nonlinear conversion efficiency.
Basic biomedical research: used for in vivo imaging (such as two-photon microscopy) and photothermal therapy mechanism research, the deep tissue penetration and single-mode characteristics of 1064nm single mode laser diode can achieve precise effects on cells or tissues and reduce interference with biological samples.
Application in the field of material processing
Precision micromachining: used for micro-cutting, drilling, and etching of semiconductor chips and optical components. The extremely small spot (micrometer level) and high energy density of single-mode lasers can achieve nanometer-level precision processing, avoiding edge burrs or excessive heat-affected zones caused by multi-mode lasers.
Preparation of thin films and coatings: Depositing functional thin films (such as high-temperature superconducting films and nano-ceramic films) by laser ablation, the stable energy output of single-mode lasers can ensure uniform composition and controllable thickness of the thin film.
Material surface modification: 1064nm single mode infrared laser diode is used for surface hardening and annealing of metals and ceramics. The uniform energy distribution of single-mode beams can achieve local precision heating and improve the surface properties of materials (such as wear resistance and corrosion resistance).