?????????????????? ???????? ?????? ?????????????????????A dispersed Bragg reflector laser (DBR) can be a sort of one-frequency laser diode.[eleven] It can be characterized by an optical cavity consisting of an electrically or optically pumped gain region between two mirrors to deliver feed-back. On the list of mirrors is usually a broadband reflect

- ?????????? ?????????-????????????????????????? ?Most effective final results for micromachining are obtained when the pulse-to-pulse overlap is inside the variety of 50% to 70%. Quite simply, the beam deflection system moves the beam about just one-3rd of your beam diameter ahead of the arrival of the subsequent ultrafast pulse. Consequently, a r