| Customization: | Available |
|---|---|
| Wavelength: | 515nm/1030nm/343nm |
| Beam Divergence Full Angle: | < 2mrad |
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| MODEL | GXF 515-10 | GXF 515-30 | GXF 515-40 |
| Wavelength | 515nm | ||
| Pulse Repetition Rate Range | 1Hz - 1000kHz | ||
| Pulse Width | 400fs - 800fs | ||
| Average Power | 10W@1MHz | 30W@1MHz | 40W@1MHz |
| Average Power Stability | <1% RMS over 8 hours | ||
| Pulse-to-Pulse Stability | <3%rms over 10mins | ||
| Spatial Mode | TEM00(M2 <1.3) | ||
| Beam Divergence Full Angle | < 2 mrad | ||
| 1/e2 Beam Diameter | 2.0±0.2mm | ||
| Beam Roundness | >85% | ||
| Beam Pointing Stability | <50urad | ||
| Polarization Direction | Vertical | ||
| Polarization Ratio | >100: 1 | ||
| Operating Voltage | 90-260VAC | ||
| Cooling | Water-cooling | ||
Femtosecond laser is the generating devices of ultra-short pulsed laser which emits laser in an ultra short time. The luminous time of the camera's flash is about 1 microsecond while the ultra-short pulse of femtosecond laser emits laser in about one billionth of its time. As we all know, the speed of light is 300,000 kilometers per second but light moves forward by only 0.3 microns in 1 femtosecond.
First of all the femtosecond laser lasts for very short time of only a few femtoseconds and it is thousands of times shorter than the shortest pulse derived with electronic methods which is the shortest pulse that humans can obtain under experimental condition.
Secondly femtosecond laser has high instantaneous power up to trillions of watts which is hundreds of times more than the total power generated all over the world.
Lastly, femtosecond laser can focus on the space area smaller than the diameter of hair, causing the intensity of electromagnetic field several times higher than the force of nucleus on surrounding electrons. And many of extreme physical conditions do not exist on earth and are impossible to gain by other ways. Due to ultra high peak power of femtosecond laser, the laser intensity can reach 1022W/cm² after focusing. The intensity far exceeds the internal interaction Coulomb field inside atom and consequently femtosecond laser pulse can easily release electrons can from atom and form plasma. For example, the Coulomb field intensity of hydrogen atom is 5*1011V/m while the femtosecond laser pulse of 1mJ can be 1012V/m after focusing so that the hydrogen atom can be ionized.
Femtosecond laser obtains short pulses by mode-locking technology on the femtosecond scale. Femtosecond laser is not monochromatic laser but a combination of laser whose wavelength continuously changes and central wavelength is around 800nm. The spatial coherence of the laser with continuous wavelength in this range is used to get great compression in time to gain the pulse output of femtosecond scale. The laser crystals are titanium gemstone crystals of wide laser spectrum.
Generally we can record instantaneous state of moving objects with flash photography.
In the same way, if a femtosecond laser is used to flash, it is possible to see every passage of the chemical reaction in the process at drastic rate.Thus femtosecond laser can be used to study the mystery of chemical reactions.
The most direct application of femtosecond pulsed laser is as laser source to form a variety of time-resolved spectroscopy, pumping and detection techniques. Its development has brought the research of physics, chemistry, biology, materials and information sciences into the field of microscopic ultrafast processes. It has created some brand new research fields such as femtosecond chemistry, quantum control chemistry, semiconductor coherent spectroscopy and etc.The combination of femtosecond pulsed laser and nano microscopy enables people to study the carrier dynamics in nanostructure like quantum wires, quantum dots and nanocrystals of semiconductor materials. In biology field, differential absorption spectroscopy and pumping/detection techniques provided by femtosecond laser technology are being used to study the energy transfer, energy transfer and charge separation processes of photosynthetic reaction centers. Ultra-short pulse laser is also applied in transmission, processing and storage of information.
Another important application of femtosecond laser is microfabrication. The femtosecond laser pulse with pulse width of only one of thousand trillions seconds has unique characteristics on material processing. For example it has small or almost no melting zone for processing aperture and is used to microprocess and engrave on a variety of materials such as metals, semiconductors, transparent materials and even biological tissues. The processing area can be smaller than the focusing size and the diffraction limit can be broken through. Femtosecond laser is now used by some automobile manufacturers and heavy equipment processing plants to process engine fuel nozzles in better way. Small holes of hundreds of nanometers width can be made on the metal with ultra-short pulse laser.
| MODEL | GXF 1030-20 | GXF 1030-50 | GXF 1030-70 | GXF 1030-100 |
| Wavelength | 1030nm | |||
| Pulse Repetition Rate Range | 1Hz - 1000kHz | |||
| Pulse Width | 400fs - 800fs | |||
| Average Power | 20W@1MHz | 50W@1MHz | 70W@1MHz | 100W@1MHz |
| Average Power Stability | <3%RMS over 8 hours | |||
| Pulse-to-Pulse Stability | <2%RMS | |||
| Spatial Mode | TEM00(M²<1.3) | |||
| Beam Divergence Full Angle | < 2 mrad | |||
| 1/e² Beam Diameter | 2.0±0.2mm | |||
| Beam Roundness | >85% | |||
| Beam Pointing Stability | <50urad | |||
| Polarization Direction | Vertical | |||
| Polarization Ratio | >100: 1 | |||
| Operating Voltage | 90-260VAC | |||
| Cooling | Water-cooling | |||
Glass, as an important industrial material, is widely used in the fields of automotive, construction, medical treatment, display, electronic products and etc. The speed of laser processing will be different due to different thickness of applied glass. Femtosecond laser has unique advantages in glass processing because of high brightness, small focusing spots and small heat-affected zone.
Ultrafast lasers have the characteristics of short pulse width and high peak power. When acting with transparent materials like glass, nonlinear effects will be produced such as nonlinear ionization and self-focusing. The characteristic has been widely used in the processing of transparent materials. When welding glass with continuous and long-pulse lasers, it is often necessary to add an absorption layer and the high thermal impact makes it difficult to achieve high-quality welding.
In 2005, researchers used femtosecond lasers to successfully weld glass for the first time. At present, researchers at home and abroad have realized ultra-fast laser welding of various glasses such as quartz glass, photosensitive glass, borosilicate glass, soda-lime glass, and non-alkali aluminosilicate glass, and obtained high connection strength.
However, ultra-fast laser glass welding has very demanding requirements for clearance. It is usually necessary to form optical contact between the glasses through external forces or fixtures which means the gap is less than 1/4 of the wavelength. After strict cleaning of the glass, it is difficult to achieve large-area optical contact. In addition, the ultra-fast laser welding of glass has more demanding requirements for clearance. The ultra-fast laser welding of the glass is greatly restricted in engineering applications due to the combined effect of the two aspects. How to achieve ultra-fast laser welding of glass in non-optical contact has become a hot research topic in recent years.
In order to achieve intensity threshold of nonlinear absorption light of glass, the microscopic objective lens of large numerical aperture is usually used to focus the laser beam when welding glass with ultra-fast lasers. However, it is not conducive to the promotion and application of welding process in industry. On the one hand, the short focal length(usually in the order of millimeters) limits the thickness of the glass and the shallow depth of focus makes it demand on the the position of the focus point during welding. On the other hand, the small diameter of focusing spot(usually only a few microns) and the narrow width of weld causes the carrying capacity of the weld weak.
Owing to the large photon energy of femtosecond laser, the nonlinear absorption threshold can be reduced, thus long focal length and large spots can be used for welding. In addition, sufficient amount of glass materials can be melted to fill the gap. Therefore, femtosecond laser can realize continuous seam welding of glass in non-optical contact.
At present, femtosecond laser has been applied in a wide range of fields such as physics, chemistry, life sciences, medical treatment and engineering especially in the field of optics and electronics. There are also new possibilities of applications in the fields of communications, computers and energy. The intensity of laser can transmit a large amount of information from one place to another almost no loss, inducing further high speeds in optical communication. Femtosecond laser also has brought huge impact in the field of nuclear physics. Pulsed laser has so strong electric field that it is possible to accelerate electrons to be close to the speed of light in 1 femtosecond. There it can be used as "accelerator" to accelerate electrons.
With further development of the laser technology of ultra-short pulse laser and improvement of commercial femtosecond laser with high reliability, there will definitely have wider applications for femtosecond laser in more fields.
| MODEL | GXF 343-5 | GXF 343-15 | GXF 343-30 |
| Wavelength | 343nm | ||
| Pulse Repetition Rate Range | 1Hz - 1000kHz | ||
| Pulse Width | 400fs - 800fs | ||
| Average Power | 5W@1MHz | 15W@1MHz | 30W@1MHz |
| Average Power Stability | <1% RMS over 8 hours | ||
| Pulse-to-Pulse Stability | <3%rms over 10mins | ||
| Spatial Mode | TEM00(M² <1.3) | ||
| Beam Divergence Full Angle | < 2 mrad | ||
| 1/e² Beam Diameter | 2.0±0.2mm | ||
| Beam Roundness | >85% | ||
| Beam Pointing Stability | <50urad | ||
| Polarization Direction | Horizontal | ||
| Polarization Ratio | >100: 1 | ||
| Operating Voltage | 90-260VAC | ||
| Cooling | Water-cooling | ||
The resolution of the clock time in our daily life is seconds but the resolution of femtosecond laser on time can reach the level of femtosecond. Many details of movement which we normally cannot see with naked eyes can be seen by the machine whose resolution of time reaches a certain level. For example, we can see a very wonderful world with the help of film and television equipment.
The femtosecond laser is a kind of pulsed laser. Femtosecond refers to the duration of pulse. This is not the same thing as the frequency of pulse. The frequency of pulse means the number of pulses emitted by laser within 1 second. For example, the pulse duration of 100 milliseconds is 1 second while the pulse duration of 10,000 milliseconds is 10 femtoseconds. Therefore, we can understand that a femtosecond laser can emit 1010 pulses within 1 second.
In a femtosecond laser, all electrons will move at extremely high speeds. When an object moves quickly, an intense light will be reflected from its surface. Femtosecond laser can be used to study how light travels and changes in space. Theoretically speaking, femtosecond laser can be used to study the motion of some atoms and molecules. Smaller, faster and more subtle movements can be produced than that we see in our daily life by controlling the pulse duration of femtosecond laser.
When studying photosynthesis, you need to emit 10,000 pulses in one second if you want to observe the process of photosynthesis from leaves. If not you will not be able to see the process. It is required to create a femtosecond laser with extremely high time resolution to achieve this goal. In order to make such a laser, we need to emit the ultra-short pulse laser on the materials. Laser scanning technology can be used to produce a very thin film of femtosecond laser to do this work.
So far, there are already several advanced femtosecond laser systems in the world. These systems can place a femtosecond laser one meter away to observe what it is doing.
Femtosecond laser has much higher resolution of time than film and television equipment. After calculation, femtosecond laser has obtained the world's shortest pulse which humans can obtain in the laboratory. Through femtosecond laser, we can see faster and more subtle movements such as the photosynthesis process of green plants, the fission process of cells, the movement of electrons around atoms and so on. However, these processes cannot be formed in images and they can only be displayed by femtosecond lasers in the form of ripples. Nonetheless, there are many things that professionals can do with femtosecond lasers and scientists are studying how to apply it to examine cancer cells in human body. Since femtosecond laser also has extremely high spatial resolution, they can catch up with the electrons moving around nucleus and destroy them one by one, only leaving an isolated nucleus alone.
Femtosecond laser is generally applied in the fields of glass, ceramic processing, medical treatment, or semiconductor, scientific research, aviation materials, material microprocessing and etc. Green femtosecond laser is mostly used in precision measurements like human tissue, DNA separation, cell structure analysis while UV femtosecond laser has wide applications in the fields of OLED cutting, wafer cutting, thin polymer film cutting, semiconductor material cutting, FPCB and low-cost electrical constant material processing as well as stainless steel drilling and stainless steel sheet processing. INNGU GXP series femtosecond laser has integrated design with compact structure and small size, which has effectively improved the convenience and stability of the laser. At the same time, INNGU femtosecond laser adopts industrial level design and industrial manufacturing, thus it can run stably in long term and work normally under harsh environments. Besides, GXP series femtosecond laser can be free from external interference during operation and has the advantages of low noise, high output power and strong system stability.
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