{"id":7908,"date":"2024-09-13T11:32:54","date_gmt":"2024-09-13T08:32:54","guid":{"rendered":"https:\/\/quantum-electronics.ru\/en\/?p=7908"},"modified":"2024-09-13T13:51:34","modified_gmt":"2024-09-13T10:51:34","slug":"dynamics-of-a-single-mode-laser-with-an-additional-mirror","status":"publish","type":"post","link":"https:\/\/quantum-electronics.ru\/en\/dynamics-of-a-single-mode-laser-with-an-additional-mirror\/","title":{"rendered":"Dynamics of a single-mode laser with an additional mirror"},"content":{"rendered":"<p>N. N. Rosanov<\/p>\n<ul>\n<li>Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow<\/li>\n<li>Space Research Institute, Russian Academy of Sciences, Moscow<\/li>\n<li>P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow<\/li>\n<li>Czech Technical University in Prague, Prague, Czech Republic<\/li>\n<\/ul>\n<div class=\"around-button\"><b>Abstract:<\/b> We report for the first time the study of a unique rangefinder based on an eye-safe diode injection laser (less than 1 \u03bcJ\u00b7cm<sup>\u20132<\/sup>) and a single photon avalanche photodiode (single photon avalanche diode, SPAD). A new generation regime of a nanosecond laser with a 200-ps step at the front of a 4-ns pulse with a length of \u223c1.2 m is implemented. It is found that the observed jump in the optical pulse amplitude is initiated by a current avalanche in a field transistor that switches the capacitance discharge in the power supply circuit of the laser diode. Registration of a 200-ps amplitude jump by a fast SPAD receiver (20 ps) increases the accuracy of the range finder by a factor of 12. The use of such rangefinders for measuring distances at a critical distance (less than the length of a laser pulse), for example, in the problems of landing or docking of spacecraft, rendezvous and mooring of underwater robots, is discussed.<\/div>\n<div><\/div>\n<div class=\"around-button\"><b>Keywords:<\/b> <i>diode laser, picosecond front of a nanosecond pulse, laser rangefinder.<\/i><\/div>\n<div><\/div>\n<div><b>Received:<\/b> 09.11.2022<\/div>\n","protected":false},"excerpt":{"rendered":"<p>N. N. Rosanov Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow Space Research Institute, Russian Academy of Sciences, Moscow P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow Czech Technical University in Prague, Prague, Czech Republic Abstract: We report for the first time the study of a unique rangefinder\u2026 <span class=\"read-more\"><a href=\"https:\/\/quantum-electronics.ru\/en\/dynamics-of-a-single-mode-laser-with-an-additional-mirror\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2347],"class_list":["post-7908","post","type-post","status-publish","format-standard","hentry","category-stats","tag-n-n-rosanov"],"_links":{"self":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts\/7908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/comments?post=7908"}],"version-history":[{"count":0,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/posts\/7908\/revisions"}],"wp:attachment":[{"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/media?parent=7908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/categories?post=7908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantum-electronics.ru\/en\/wp-json\/wp\/v2\/tags?post=7908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}