GZTECH Expands into New Field of Solid UV Lasers

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The demand for high-power UV lasers has doubled

The shorter wavelength, higher single photon energy, smaller focal spot, and effective reduction of thermal effects make UV lasers suitable for use in multiple areas such as metal/non-metal materials marking, PCB/FPC cutting/drilling, and brittle material processing. UV laser processing is an important method of precision machining in industrial production.

Currently, 3W, 5W, and 10W UV lasers are the mainstream products in the market, while 15W and above UV lasers belong to high-end products with broad development prospects. However, domestic manufacturers do not have the capability of mass-producing high-power UV lasers, and the market is mostly monopolized by foreign companies. Reducing costs and increasing efficiency has always been the goal pursued by various industries. Stable high-power UV lasers are a top priority for domestic laser manufacturers.

GZTECH launches high-power UV lasers

Adhering to the development concept of "an advanced laser source supplier serving precision manufacturing," GZTECH decided to layout in the field of solid lasers, increase investment, and introduce a team with nearly ten years of experience in developing high-power UV lasers in order to further improve service for precision manufacturing and provide advanced laser sources. After a year of hard work and overcoming obstacles, they launched a heavy-duty high-power solid nanosecond UV laser to meet the needs of most industrial precision processing.

The nanosecond UV laser launched this time has the characteristics of three highs and one small as follows:

2. 1 High power 

Semiconductor pumping and superior pump coupling design, multi-stage serial connection of gain crystals, electric-optical conversion efficiency greater than 10%, and laser output power up to 50W.

2.2 High beam quality

With excellent thermal management design, special doping of gain crystals, higher thermal conductivity than conventional gain media, effectively reducing thermal effects, and controlling beam quality while ensuring power requirements. The final optimized scheme was achieved through a combination of optical simulation and practical application, with fundamental mode TEM00 output and M2<1.1. The ellipticity of the beam spot can reach>90%.

 

High beam quality High beam quality
High beam quality

2.3 High power stability

The team has rich experience in structural thermodynamic design, designs water-cooled circuits for each heat source, adopts the optimal cooling solution to achieve high-precision cooling, and increases the thermal conductivity of conventional gain media to effectively reduce thermal effects. After multiple rounds of thermal simulation and practice, the optimal structure scheme was designed to ensure long-term stable operation of the laser. Through a 12-hour power stability test, the power fluctuation was only 1.9%, and the RMS value was only 0.4%.

High power stability

2.4 Small size

The 30W UV laser uses an integrated design with built-in beam expansion (optional) and a compact structure, which is 30% smaller than the high-power UV lasers on the market, making it easy to integrate.

 Small size

The actual output power of the 30W high-power nanosecond UV laser developed by GZTECH can exceed 40W, with more than 30% power redundancy. Before leaving the factory, it undergoes a full-power baking process for up to 7 days to ensure long-term stable operation of the laser.

High-power UV applications

With the further development of the 5G industry and the pursuit of flexible OLED displays by major electronics manufacturers, the market demand for FPC flexible circuit boards is increasing day by day, and the market for cutting FPC using higher power UV lasers is booming.

 High-power UV applications

 

GZTECH's 15W and 30W UV lasers help to improve FPC cutting efficiency, using a scanning mirror and mobile adsorption platform for cutting tests, with high accuracy, good results, and fast speed.

GZTECH's 15W and 30W UV lasers

Tests show that the efficiency of GZTECH's 30W nanosecond UV laser for cutting FPC can reach 85.5mm/s, while the efficiency of 15W nanosecond UV laser is 34.4mm/s. Under the same cutting effect, the 30W nanosecond UV laser is 148% more efficient than the 15W nanosecond UV laser.

 GZTECH's 30W nanosecond UV laser  GZTECH's 30W nanosecond UV laser
 GZTECH's 30W nanosecond UV laser

30W UV specifications

NO

Parameter

Value

Unit

1

Central wavelength

355

nm

2

Maximum pulse energy

>750(@40kHz)

μJ

3

Output Power

>30(@40kHz)

W

4

Frequency adjustment range

30~200

kHz

5

Pulse width

10~40(15±2ns@40kHz)

ns

6

Output power stability

< 3%

RMS

7

Pulse stability

<3%

RMS

8

Beam quality M2

< 1.3

/

9

Beam pattern

TEM00

/

10

Spot circularity

>90

%

11

Polarization direction

horizontal

/

12

Beam diameter (after 6 times beam expansion)

5±0.5

mm

13

Divergence angle

<2

mrad

14

Pointing stability (8h)

<25

urad/°C

15

Startup preheating time

>15

min

GZTECH can provide UV lasers with different specifications such as 5W, 10W, 15W, 20W, and 30W to meet different application requirements. For example, 15W UV has three specifications of N1, N2, and N3 lasers, which can be used in different application industries such as conventional engraving and cutting, high-speed film cutting, high-speed flying marking, and brittle material processing.

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