?????????????? ????????????????????? ?????????????????????????A distributed Bragg reflector laser (DBR) is often a kind of single-frequency laser diode.[11] It truly is characterised by an optical cavity consisting of an electrically or optically pumped obtain region among two mirrors to deliver feed-back. One of the mirrors is really a broadband r

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Ti:sapphire CPA techniques are unique in their capability to generate pulse energies of numerous millijoules with pulse widths as brief as 20 fs. Custom CPA devices depending on Ti:sapphire can deliver even petawatt peak powers.??????????????????????????? ???????? ??????????????????????????????????????????????The active area size is rather limited