{"id":386,"date":"2021-10-19T00:36:38","date_gmt":"2021-10-19T00:36:38","guid":{"rendered":"https:\/\/beamq.com\/laser\/?p=386"},"modified":"2021-10-19T00:39:56","modified_gmt":"2021-10-19T00:39:56","slug":"mode-locked-laser","status":"publish","type":"post","link":"https:\/\/beamq.com\/laser\/mode-locked-laser\/","title":{"rendered":"Mode locked Laser"},"content":{"rendered":"\n<p>Mode locked Laser<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"450\" height=\"100\" src=\"https:\/\/beamq.com\/laser\/wp-content\/uploads\/2021\/10\/Mode-locked-Laser.gif\" alt=\"\" class=\"wp-image-389\"\/><\/figure>\n\n\n\n<p>Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10\u221212 s) or femtoseconds (10\u221215 s). A laser operated in this way is sometimes referred to as a femtosecond laser, for example in modern refractive surgery. The basis of the technique is to induce a fixed-phase relationship between the longitudinal modes of the laser&#8217;s resonant cavity. Constructive interference between these modes can cause the laser light to be produced as a train of pulses. The laser is then said to be &#8216;phase-locked&#8217; or &#8216;mode-locked&#8217;. Check <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mode-locking\">wikipedia for Mode-locking<\/a> . <\/p>\n\n\n\n<p>Mode locking is the most important technique for generating pulses with picosecond and femtosecond durations. When a laser is mode locked, one or sometimes several pulses are circulating in the laser resonator. The case of a single pulse is most common. Each time the pulse hits the output coupler mirror, a part of its energy is emitted, so the laser output is a regular pulse train. The gain medium replenishes the pulse energy in each roundtrip.<\/p>\n\n\n\n<p><a href=\"https:\/\/spie.org\/publications\/fg14_p33-36_mode_locking?SSO=1\">Mode Locking SPIE Press books opened for your reference.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mode locked Laser Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10\u221212 s) or femtoseconds (10\u221215 s). A laser operated in this way is sometimes referred to as a femtosecond laser, for example in modern refractive [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/posts\/386"}],"collection":[{"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/comments?post=386"}],"version-history":[{"count":3,"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/posts\/386\/revisions"}],"predecessor-version":[{"id":390,"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/posts\/386\/revisions\/390"}],"wp:attachment":[{"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/media?parent=386"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/categories?post=386"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/beamq.com\/laser\/wp-json\/wp\/v2\/tags?post=386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}