Lamp-pumped lasers and diode-pumped laser comparison
And lamp-pumped semiconductor lasers are based on the ND: YAG (neodymium-doped yttrium aluminum garnet) crystal as laser-produced material, it can be converted to 1064nm 808nm visible laser is not visible, but the output of the laser, another more critical factor is the output of the crystal rod laser pump source, diode-pumped semiconductor diode issue is the use of 808nm light waves; and lamp-pumped krypton lamp is used to pump the light, but the krypton lamps emit a wide spectrum of light , but at a slightly larger at 808nm peak, other wavelengths of light eventually turned into useless heat from the out. Therefore, diode-pumped laser conversion efficiency is higher than the lamp-pumped too much. The following advantages:
One. Krypton lamp for maintenance without
Semiconductor diode, long life, rated more than 10,000 hours of work time, and krypton lamp life span of only a few hundred hours (usually in the 400-600 hours), so the lamp-pumped laser for some time at work, need to replace the krypton light, especially for metal marking, the larger the energy required, krypton lamp life will be more affected. The semiconductor laser-pumped lasers, also known as maintenance-free, meaning its work without supplies for a long period of time without maintenance. My company is more efficient to extend the semiconductor laser diode pump source of life, plus the use of pre-ignition frequency control technology, ensuring that the impact of LED current from the premise, according to the workload and intensity, most significantly reduced by light-emitting diode current density, thus effectively extending the life of the semiconductor diode. Depending on the user's different production tasks, the semiconductor light-emitting diode lasers can guarantee the life of one year to three years in between. Marking each semiconductor pump can save cost for light supplies: more than 12 lamps / year * 350 yuan / * 3 years = 1.26 million.
Lamp-pumped laser marking machine to be shut down for normal krypton lamp, for many large-scale production line is not acceptable because of krypton lamp life varies, so there probably because of the uneven quality of domestically produced light caused by the use of krypton lamp more more wasting! Use the above semiconductor marking machine can save a large extent on the maintenance downtime caused by human and material losses.
II. Power
Because the conversion efficiency diode-pumped, mode is good, more focus on a smaller area of high-energy spot, mark the same object, it needs external energy will be smaller. While the waste heat generated is far less than the lamp-pumped laser, determine its lamp-pumped laser does not require as large as the cooling system. Therefore, diode-pumped laser system power consumption is much smaller than the lamp-pumped.
A 50W lamp-pumped laser marking machine's power consumption in 6KW, while a 50W power consumption of semiconductor laser marking machine is only about 2KW to three years, for example, a day's work 24 hours a month working 28 days, once Industrial electricity 1.1 yuan, a power light, a semiconductor laser to save than a lamp-pumped lasers (6-2) KW * 24 hours * 28 days * December * 3 years * 1.1 / kWh = 106 450 RMB!
III. Better marks
As the semiconductor diode made almost exclusively a wavelength of light, so it is pumped by a monochromatic laser produced a better, better laser mode, laser mode will better focus the laser spot after the smaller, more energy concentrated to obtain a better marker effect;
IV. Small
Compact semiconductor laser module itself, with its laser mode is good, so the volume ratio of the semiconductor pump laser lamp-pumped lasers are small in size nearly one-third.
Semiconductor pump laser produces less heat, cooling system required a small, usually only one of the chillers can be required to lamp-pumped lasers typically require two or more chillers, but require a larger pump to provide greater cooling water flow. So the lamp-pumped laser marking machine is running the operation of noisy, and a huge opportunity to generate more heat in cold water, especially in the southern summer, high ambient temperature, these extra calories will make workers worse working conditions, or needs more air-conditioning system to regulate the temperature of the working environment, increasing production costs.
Short compared with the use of semiconductor laser light pumped laser, although the price of each marking slightly higher, but three years each marker can be used to accurately calculate the cost savings will be 119,050 yuan, not including resulting in downtime for light to affect the production of standby losses (user-level), staff costs for light, and light maintenance of the waste caused by uneven quality of the production environment to increase the cost of air conditioners and so on.
