The wavelength of this type of Laser Pointer is 532nm

The wavelength of this type of Laser Pointer is 532nm
Slow-axis divergence control aspects, recent studies show that, Apart from the device's own structure, the drive current density and thermal effects together influence the size of the semiconductor laser slow axis divergence angle of that is, the long cavity length single components of slow-axis divergence angle the most easy to control, while in the array of devices, with the increase of the fill factor, the light-emitting unit of thermal crosstalk between the intensification will lead to increases in the slow-axis divergence. 2009, Bookham, Inc., Switzerland Preparation of 5 mm cavity length, 9XX nm, band 10 W commercial devices, the success of slow-axis divergence angle (95% energy range) from the original. 10o ~ 12o reduced to the 7o about; the same year, the German Osram company , preparation of Coherent array of slow-axis divergence of the devices (95% energy range) up to 7o level. When the teacher performs the electronic teaching,  Laser Pointer  can be used.
Cm array of semiconductor laser standards development status. Standard cm array in order to obtain high power output and slow axis scale of 1 cm substrate horizontal parallel integration of multiple single semiconductor laser components, semiconductor laser devices, has long been the most commonly used in high power semiconductor laser form of high-power devices. Along with high-quality, low defect epitaxial growth of semiconductor materials technology, and the cavity surface passivation techniques to improve the existing CM Bar cavity length from 0.6 to 1.0 mm increased to 2.0 ~ 5.0mm, making the CM Bar output power substantially improved. It is unnecessary for the customer to go to the screen for a closer contact with the screen for the good explanation because Laser Pointer  is adopted.
In early 2008, Spectra Physics Hanxuan Li, Preparation of 5 mm cavity length, the fill factor of 83% of the semiconductor laser array, using double-sided micro-channel heat sink cooling in the center wavelength at 808 nm, 940 nm, 980 nm 800 W / bar, 1010W/bar, 950 W / bar, the current laboratory up to the CM Bar, continuous power output level. In addition, Germany, JENOPTIK, Switzerland Oclaro a number of semiconductor laser suppliers also continued with the preparation of the kilowatt-class diode laser array, which Oclaro J. Müller, it is clear that the preparation in the existing technical conditions for 1.5kW/bar array device is not a problem. Also, there are the page up and page down button on Laser Pointer .
At the same time, the power with high beam quality, low fill factor CM Bar, Table 1 for the German Limo company with a different filling factor CM Bar BPP results in Table 1, the lateral dimensions of a semiconductor laser array device The fill factor and BPP is proportional to the divergence angle is the same situation, that is, the lower the fill factor, the optical parameters of the product of the smaller, the better the beam quality.