Fiber-coupled Laser for Development and Exposure

Fiber-Coupled Laser for Development and Exposure

Development is a photolithography technology in which the photoresist in the exposure area of the positive photoresist and the non-exposure area of the negative photoresist are dissolved in the developer to form a three-dimensional pattern on the photoresist.

Development and exposure is a key step in the PCB plate making process. The fiber-coupled laser in the development and exposure technology is mainly reflected in its ability to provide precise and stable light sources, which involves accurately copying the designed circuit graphics onto the PCB board and laying the foundation for subsequent etching and welding processes.

The following are some key applications and advantages of fiber-coupled lasers in development and exposure:

1. Multi-wavelength integration: Multi-wavelength coupled lasers can integrate multiple laser wavelengths into one optical fiber, which is very useful for applications that require specific wavelengths for development and exposure. For example, wavelengths such as 375nm, 405nm, and 410nm are commonly used in PCB plate making, laser direct writing, development and exposure, etc.

2. High-resolution laser direct writing lithography machine: High-resolution laser direct writing lithography machine using 375nm or 405nm ultraviolet light source is suitable for UV-sensitive glue, and can directly scratch in photoresist or UV-sensitive glue to obtain micro-nano structures.

3. High precision and high speed: Fiber compression spot technology can make the fiber output laser spot diameter reach 50 microns or even smaller. Fiber-coupled lasers have shown broad application prospects in many fields due to their advantages of high precision, high speed, and long-distance transmission, including laser processing fields such as laser marking, laser cutting, laser welding, etc.

4. Miniaturization and modularity: Fiber-coupled lasers have the characteristics of high cost performance, UV-resistant fiber coupling, low power consumption, miniaturization, and modularity, which makes them very useful in development and exposure applications where space is limited or flexible deployment is required.

Parameters of the development exposure laser:

Laser wavelength: 405nm±3nm

Laser power: 10W-100W

Working current: 7A

Working voltage: 24V

Fiber interface: FC

Fiber core diameter: 105μm

Fiber length: 1.5m

Service life: 10000h

Applications:

1. Development and exposure

Used in the development and exposure step of PCB production, through LDI exposure technology, the content of electronic files is transferred to the PCB board with laser.

2. Fluorescence excitation

Used to excite biological proteins to emit fluorescence, and even single molecule detection can be achieved. The detection process is non-destructive, non-destructive, highly sensitive, and effectively protects samples. It is an important research and analysis method. At present, laser-induced fluorescence technology has been applied to flow field display, microbial detection, semiconductor detection and other scenarios.