for the certification of laser pointer

Ytterbium-doped lasers pumped to praseodymium-doped material for the work output. Pump light is 1064nm, the output pulse is 1483.4nm (two Stocks), the output power of 2.22W. Some other laser pointer products will create the laser radiation. The company is well prepared for the certification of laser pointer . Another recently emerged as a multi-wavelength Raman fiber laser (MWRFL) attracted wide attention, including dual-wavelength Raman fiber laser (2lRFL) and three-wavelength Raman fiber laser (3lRFL) has been successfully demonstrated, IPG, etc. has begun to form products. Alcatel reported on the meeting in OFC'2002 a reconfigurable three-wavelength Raman device (3lRFL) shown in Figure 4 [5], to get the output wavelengths are 1427nm, 1455nm and 1480nm output can be used for C + L-band Raman amplifier. Also by adjusting the output coupler, the output power of each wavelength at 50mW-400mW range adjustable. The main part of the 3lRFL by the 11 grating (FBG) and P-doped composition of 300 meters, and the output wavelength of 1117nm of cladding-pumped Yb3 + is used as the pump source. Stocks power its internal migration shown in Figure 5. The economical technology of laser pointer should be enhanced more.
The basic principle is divided into the following three steps: First, the role of the pump light at 1117nm, using P2O5 produces frequency shift, get 1312nm components of a Stocks; then in a Stocks role, using the frequency shift of quartz, Stocks of the two components to be 1375nm; Finally, again using quartz frequency shift, and get 1427.0nm, 1455.0nm and 1480.0nm output. It should be noted, as far away from the Raman peak, therefore, the interaction between the different Stocks can not be ignored. Shown in dotted line in Figure 3, 1427.0nm to 1455.0nm and 1480.0nm Stocks components of the pump and make access to gain the same token, 1312nm of Stocks components can 1375nm, 1427nm, 1455nm and 1480nm additional Raman gain.  laser pointer will help the lecturer to determine the target during the meeting.
Adopt a similar structure in Figure 4, OFC'2002 the other two papers reported the effect of the pump light component produced four Stocks reconfigurable Raman fiber laser, the output wavelength are 1428nm, 1445nm and 1466nm [6 ] [7]. OFC'2001 the paper reported a 3lRFL, the output lines are: 1427nm spectral line width of 0.8nm, 1455nm and 1480nm spectral line width of 0.4nm [8]. Ring cavity in the technology has an important position and role, but also to build Raman device is another important way.