Huaye green laser pointer company has powerful electronic technology R&D strength

Huaye  green laser pointer  company has powerful electronic technology R&D strength.A diffraction loss and Fresnel number (1) the formation of the light energy loss due to diffraction effect known as diffraction losses. (2) as shown in the spherical confocal cavity, mirror on the fundamental transverse mode Gaussian beam intensity distribution can be expressed as cavity diffraction losses (3) one-way diffraction loss for hitting the mirror outside the loss out of the optical power φ 'one-way diffraction loss φ' and shooting at the mirror one-way diffraction loss φ 'the ratio of the total surface of the optical power φ: (4) In order to facilitate analysis of the diffraction loss, often introducing the parameters of the Fresnel number, which is defined as: a2 N = λL one-way diffraction loss is expressed as: one-way diffraction loss is expressed as: confocal cavity of the fundamental transverse mode, the diffraction loss is only associated with the Fresnel number N, N greater the smaller the diffraction loss.  Different types of cavity and the cavity parameters, the diffraction loss of the same. Usually when the resonator in the design, appropriate choice of the cavity type and cavity parameters g, N can be the base mode output. Confocal cavity (g = 0) ratio δ10/δ00 maximum, which seems to favor the election mode, however, the fundamental mode of the confocal cavity loss δ00 and the loss of the TEM10 mode δ10 are too small. Order to suppress the higher order mode, it is necessary to reduce the cavity Fresnel number N N value decreases, the fundamental mode volume is small, the output power decreased. Parallel plane cavity, although the ratio δ10/δ00 δ00 and δ10 allow owners to choose the larger value of N, the TEM10 mode can still not state of oscillation suppression, due to their fundamental mode volume than Once a single transverse mode oscillation, the output power may be high.Huaye  green laser pointer  company takes the ISO9001 international quality system certification as its management system. (2) aperture method for mold diaphragm method selected mode is most common, is also very simple, just insert an appropriately sized holes in the cavity aperture can suppress higher order transverse mode and base mode output.