Swiss scientists succeeded in obtaining 2μm wavelength doped 铥 fiber lasers, this type of laser through a simple and inexpensive structure, eliminating the need for expensive isolators and amplifiers. By designing a simple and novel THETA resonator structure, the light can be transmitted in the wrong direction in the optical fiber to achieve laser one-way transmission. This method is not only cheaper but also achieves higher output power than comparable lasers.
2μm wavelength laser is its key technology into operation. The absorption wavelength of the first oscillation frequency of OH bonds in water is in the range of 1.92-1.94 μm, which enables the 2 μm wavelength technique to be used in "bloodless" laser surgery in which water molecules can narrow incisions in the blood of the tissue and rapidly solidify. The multiple absorption lines of H2O, CO2 and NO2 in the atmosphere are also located in this area, presenting great potential for meteorology, environmental science and agricultural science and technology. In addition, there are some applications in free space communications, material processing and spectroscopy.
Currently, other fiber lasers in the 2 μm wavelength range are costly and cumbersome and require an optical isolator to achieve one-way transmission of light. Camille-Sophie Brès, a professor of electrical engineering at the Photonics Systems Laboratory in Lausanne, Sweden, and his PhD student Svyatoslav Kharitonov, used an annular fiber cavity THETA resonator to introduce an irreversible loss into an S-shaped feedback. The isolator typically uses a clunky Faraday rotation and a 45 ° orthogonal polarizer to suppress the backward transmission of light, and THETA resonators do this by indirectly structuring.
The design also includes a non-linear magnifier in the cavity to ensure a narrow linewidth of the emission spectrum. The laser beam produced maintains a watt-level output in the 1900-2050 nm range with a linewidth of only 0.2 nm. The researchers said they will continue to optimize the laser to achieve high quality and stable laser output.
Bar capacity: 100g (3.53 oz)
Item: MPK-WAX-001YU
Description: Plastic clamshell
1 Carton = 1000 pieces
Carton size: 650 x 430 x 450 mm = 4.45 cubic feet
N.W: 25.5 KGS (15.2)
G.W: 26.5 KGS (16.2)
Minimum order quantity requirement = 10,000pcs = 10 cartons = 255 KGS = 44.5 cubic feet
1 x 20ft container = 208,000pcs
1 x 40ft container = 450,000pcs
1 x 40ft high container = 510,000pcs
Scented Wax Tart,Scented Candle Jar,Wax Scented Tea Light Candle,Scented Candles
Hebei Huaming Laye Limited Company , https://www.huamingcandle.com