NakuLaser Blog

Filamentation cutting is a relatively new process that uses ultrashort-pulse (USP) lasers to cut a wide range of glass substrates, from soft borosilicates to chemically hardened glass used in smartphone displays. Among the advantages of filamentation cutting are the ability to produce curved shapes and cut-outs, cutting speeds up to 2000 mm/s, and superior stress-free edge quality, which eliminates the need for post-processing. The high peak intensity created by a focused USP laser produces self-focusing of the beam because of the nonlinear optical Kerr effect, further increasing power density until, at a certain threshold, a low density plasma is created in the material. This plasma lowers the material refractive index in the center of the beam path and causes the beam to defocus. If the beam focusing optics are properly configured, this focusing/defocusing effect can be balanced to periodically repeat and form a stable filament, which extends over several millimeters in depth throu

High Power Fiber Coupled Diode Laser System at 905nm laser Source.  Built-in visible pilot red laser for guide.   905nm Fiber Coupling Laser System has integrated laser diode, fiber coupling optics, laser power supply, LD current and temperature control in ONE box. Its compact dimension and convenient functions, such as power adjustment, temperature control, LED display etc, make it very suitable for pumping, scientific research, industrial and medical applications. The list price is for 15W output power.    Specifications:   Available Wavelengths (nm): 905nm±10 Central Wavelengths Tolerance (nm):±10   Available Power (W): 20W (customized up to 50W ) Red Pilot Light (P): Light for Alignment Fiber Core Diameter (µm):400 Fiber NA ( Numerical aperture ): 0.22 or better Fiber Connector:SMA905 Fiber Length (m):2 Output Power: 0-100%, adjustable by knob Operating Mode: CW, TTL or Analog on request LED Display:Diode current LD Temperature Control Ran

The DSH-355-40W laser is a compact, nanosecond ultraviolet (UV) 355 nm laser that uses the company's intracavity UV generation with Total Pulse Control (individually triggered pulses on demand) technology to achieve up to 50 W output power. www.civillaser.com

High Powered DPSS Laser 760nm 2000mW High Stability Near IR Diode Laser  FEATURES: 1.Ultra compact 2.Long lifetime 3.Cost-effectiveness 4. Easy operating APPLICATIONS: 1.Measurement 2.Spectrum analysis   SPECIFICATIONS: Product Name:760nm High Stability Laser Wavelength (nm):760±5 Output Power (mW):2000 Transverse Mode:Multimode Operating Mode:CW Power Stability (rms, over 4 hours):<5% Beam Divergence, Full Angle (mrad):<3.0 Beam Diameter at the Aperture (1/e2 , mm):~5×8 Beam Height From Base Plate (mm):29 Warm-up time (minutes):<5 Operating temperature (¡æ):10~35 Power supply (100-240VAC)"PSU-H-LED/ PSU-H-FDA (Default) TTL / Analog modulation"TTL or Analog with 1Hz-1kHz 1kHz-10kHz, 10kHz-30kHz, 30kHz-100kHz optional Expected lifetime (hours):10000 Warranty period:1 year

A systematic study of a simple and general structure for on-chip semiconductor lasers by A*STAR researchers sets the scene for much broader application of integrated semiconductor lasers beyond conventional silicon-based systems. The ability to use, manipulate and sense light is applicable to many technologies, from data interconnection and fiber optics to optical sensors and optical storage systems. One such non-silicon-based application is a new type of data storage system called heat-assisted magnetic recording (HAMR), which researchers at the A*STAR Data Storage Institute have been working on as a next-generation data storage technology. HAMR uses integrated lasers for fast and precise micro-spot heating of a magnetic medium, but requires the laser to be formed on aluminum-titanium-carbide (AlTiC) rather than silicon. This presented Chee-Wei Lee and his colleagues with a significant problem, since the silicon substrate plays in integral role in producing the laser light. &quo

671nm 500mW~900mW High power Red DPSS Laser with TTL Modulation and power supply   [Features] Miniature size Collimated straight beam Easy use & maintenance free Longlife operation High efficiency High reliability   [Specifications] Product Name: 671nm 500mW~900mW Red DPSS Laser Laser Shape: Circular, aspect ratio<1.1:1 Lead Time: 1~3 weeks,  Custom product available! Output Wavelength: 671nm Output Power: 500mW~900mW (Choose) Spatial mode: TEM00 Operating mode: CW or Modulation Modulation:  Analog or TTL modulation 0~30Khz Linewidth: <1 nm Polarization: 100:1 Pointing Stability: <0.05 mrad Beam Diameter(1/e2): 2 mm Divergence Angle: 1.0 mrad Power Stability:  <±5% per 4 hrs Light High: 25mm Temperature Stabilizing: TEC Warm Up Time: <5 minutes Beam quality(M2): <1.2 Optimum Operating Temperature: 20~30℃ Storage Temperature: 10~50℃ MTTF(mean time to failure): 10,000 hrs Laser dimensions: 100x40x50 mm

WASHINGTON — Lockheed Martin will create a high-powered laser for the U.S. Air Force that will be demonstrated on a fighter jet in 2021. The company was recently awarded a $26.3 million contract to design and build a fiber laser as part of an Air Force Research Laboratory program called Self-protect High Energy Laser Demonstrator, or SHiELD. That laser will be integrated with two other main subsystems: a pod that will power and cool the laser and a beam-control system, which will direct the laser onto the target. If successful, the technology could be a game-changer. The Air Force has long desired an airborne laser so that it can take out surface-to-air and air-to-air missile threats more cheaply than current intercept methods. Industry has struggled for about a decade to make a laser small enough to be installed on a vehicle or aircraft that was also powerful enough to be relevant on a battlefield, Rob Afzal, Lockheed’s senior fellow of laser weapon systems, said during a Tuesd

One of the most important aspects of beam delivery for a high-power laser system is the beam purge. Beam purge can be defined as a low flow of clean, dry air or nitrogen that is introduced into the enclosed laser beam path. This flow of gas keeps a positive pressure inside the enclosed beam path to keep contaminants (particulate or vapors) out of the path of the laser beam. A good beam purge is required to obtain consistent performance from any laser system, regardless of the power level; at power levels higher than 3,000 watts, it is absolutely essential because problems created by poor-quality beam purge often are magnified at these power levels. On any CO2 laser system, a number of external optics are used to transport the unfocused raw beam from the laser source to the workpiece. The path that runs between each external optic is enclosed in a hard conduit or collapsible bellows. This covering provides protection from accidental exposure to the beam and protects the beam from

Highly efficient high-power short-pulse lasers in the 2 µm wavelength range based on thulium (Tm3+)-doped materials have a variety of applications that include materials processing (such as polymer-to-metal joining), lidar, mid-infrared optical parametric oscillators (OPOs) that produce wavelengths up to 12 μm, and mid-IR supercontinuum generation. They also would enable direct coherent soft x-ray generation via high-order harmonic generation (HHG). For these applications, a light source with much higher conversion efficiency, average power, pulse energy, and shorter pulse duration is desirable. Now, Masaki Tokurakawa and colleagues at the Institute for Laser Science, University of Electro-Communications (UEC; Tokyo, Japan) have developed novel 2 µm high-power short-pulse lasers based on new technique of fiber-laser in-band pumping at 1611 nm and Kerr-lens mode locking with a new Tm-doped gain medium provided from the University of Hamburg by researcher Christian Kränkel.1, 2

Dear CivilLaser Users: Hello! In view of the advent of winter, the temperature in many cities throughout the country has dropped below zero freezing point, we hereby solemnly remind users: Equipment antifreeze measures: 1. Laser equipment needs to be guaranteed to operate at an ambient temperature above 5°C. During holidays, if the ambient temperature of the equipment is guaranteed to be above 5°C, the laser equipment needs no special protection and you can turn the equipment off. 2. If the ambient temperature is below 5 ° C, be sure to discharge the water from the laser and water cooler to prevent freezing of the laser, water cooler and lens of the external light path caused by low temperature, resulting in long-term shutdown. 3. Equipment operation Please water temperature in the water cooler to work after the temperature requirements of the equipment, condensation, be sure to promptly clean. I have the pleasure to announce that, please take the necessary measures to ensur