design of green laser pointer

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Parallel to the mid-1990s the advent of photonic crystal fiber, femtosecond fiber laser makes more of a choice branch [8]. The main characteristics of photonic crystal fiber is large mode area fiber than ordinary double-clad single-mode fiber can better maintain the characteristics of the amplifier has important applications. However, the gain of photonic crystal double-clad fiber, especially large-mode-area photonic crystal fiber is very expensive, far higher than the price of the crystal; and the need for coupling the pump light in space, the mechanical parts demanding stability, Unlike ordinary single-mode fiber and an ordinary double-clad fiber with direct fiber synthesis. The power of green laser pointer can be measured.
For the used erbium-doped fiber laser SESAM, there will be serious lattice mismatch. We use the lattice-matched growth of the absorption layer and the substrate layer spacing in the film and its dielectric coating on the metal film as a mirror, and then etching away the substrate substrate technology, the first successful development of erbium-doped high modulation depth optical fiber with a SESAM (Figure 1 (a)). The shipping description of green laser pointer is very important to the customer.