Axisymmetric-fold combination laser resonator

Analysis of using femtosecond laser scanning system to impurity-induced disordering of InGaAsP quantum wells

“…The femto second laser can achieve high precision machining at low temperature through photochemical machining, a two photon absorption mechanism, and a pulse fre quency (10 -15 ) that exceeds the thermal conductivity rate of the material (10 -12 ). The flaws that result from conventional thermal light laser processing may also be avoided, such as residual thermal stress and burrs [13][14][15][16][17][18][19]. A precision of at least 1 |µm may be achieved by reducing the duration of the burnishing process and that of subsequent procedures.…”

The research of phase-locking of more discharge tubes for two-dimensional axisymmetric-fold combination resonator CO2 laser

“…The output power of these lasers is higher but the limited r-f excitation source restricts its output power and complex resonator technique increase the cost of the whole devices. In 20th centuries, our laboratory proposes a new axisymmetric-fold combination (ASFC) resonator which bases on length-scaling and beam combination [10]. The ASFC resonator CO 2 laser is compact, structure-simple and low-cost and the output power is directly proportional to the number of discharge tube.…”

The influence of misaligned holophote of the axisymmetric-fold-combination CO2 laser on phase locking

“…Scientists usually use the methods of fold resonator [2] and beam combination [3][4][5][6] in order to improve the output power. The axisymmetric-fold-combination (ASFC) [7] laser resonator was presented in 2005. The concave-plane-concave cavities and the plane-concave cavity of ASFC CO 2 laser share a common output plane mirror, which combines the output beams.…”