E hoʻololi i ka wikiwiki o ka pulse o ka laser ultrashort ikaika loa

E hoʻololi i ka wikiwiki o ka pulse olaser pōkole ikaika loa

ʻO ka lasers super ultra-short e pili ana i nā pulse laser me nā laulā pulse o nā ʻumi a me nā haneli o femtoseconds, ka mana kiʻekiʻe o nā terawatts a me nā petawatts, a ʻoi aku ka ikaika o ko lākou kukui i kālele ʻia ma mua o 1018 W/cm2. ʻO ka laser super ultra-short a me kāna kumu radiation super i hana ʻia a me ke kumu ʻāpana ikehu kiʻekiʻe he nui ka waiwai noi i nā kuhikuhi noiʻi kumu he nui e like me ke physics ikehu kiʻekiʻe, ke physics ʻāpana, ke physics plasma, ke physics nuklea a me ka astrophysics, a hiki i ka hopena o nā hopena noiʻi ʻepekema ke lawelawe i nā ʻoihana ʻenehana kiʻekiʻe e pili ana, ke olakino lapaʻau, ka ikehu kaiapuni a me ka palekana pale aupuni. Mai ka wā i hana ʻia ai ka ʻenehana hoʻonui pulse chirped i ka makahiki 1985, ua puka mai ka watt beat mua o ka honua.laseri ka makahiki 1996 a me ka hoʻopau ʻana o ka laser watt 10-beat mua o ka honua i ka makahiki 2017, ʻo ke kiko o ka laser super ultra-short i ka wā ma mua, ʻo ia ka hoʻokō ʻana i ka "mālamalama ikaika loa". I nā makahiki i hala iho nei, ua hōʻike nā haʻawina ma lalo o ke kūlana o ka mālama ʻana i nā pulse laser super, inā hiki ke hoʻomalu ʻia ka wikiwiki o ka hoʻouna ʻana o ka pulse o ka laser super ultra-short, hiki ke lawe mai i ka hopena ʻelua me ka hapalua o ka hoʻoikaika ʻana i kekahi mau noi kino, kahi i manaʻo ʻia e hōʻemi i ka nui o ka super ultra-short.nā mea hana laser, akā hoʻomaikaʻi i kona hopena i nā hoʻokolohua physics laser kahua kiʻekiʻe.

Ka hoʻohaunaele ʻana o ke alo pulse o ka laser ultrashort ikaika loa
I mea e loaʻa ai ka mana kiʻekiʻe ma lalo o ka ikehu i kaupalena ʻia, ua hoʻemi ʻia ka laulā o ka pulse i 20 ~ 30 femtoseconds ma ka hoʻonui ʻana i ka bandwidth loaʻa. ʻO ka ikehu pulse o ka laser ultra-short 10-beak-watt o kēia manawa ma kahi o 300 joules, a ʻo ka paepae hōʻino haʻahaʻa o ka grating compressor e hoʻolilo i ka puka beam i ʻoi aku ma mua o 300 mm. ʻO ka beam pulse me ka laulā pulse 20 ~ 30 femtosecond a me ka puka 300 mm he maʻalahi ke lawe i ka distortion coupling spatiotemporal, ʻoiai ka distortion o ke alo pulse. Hōʻike ka Kiʻi 1 (a) i ka hoʻokaʻawale spatio-temporal o ke alo pulse a me ke alo phase i hoʻokumu ʻia e ka dispersion role beam, a hōʻike ka mea mua i kahi "spatio-temporal tilt" e pili ana i ka mea hope. ʻO kekahi ʻo ia ka "curvature of space-time" paʻakikī i hoʻokumu ʻia e ka ʻōnaehana lens. Hōʻike ka FIG. 1 (b) i nā hopena o ke alo pulse kūpono, ke alo pulse inclined a me ke alo pulse bent ma ka distortion spatio-temporal o ke kahua mālamalama ma ka pahuhopu. ʻO ka hopena, ua hoʻemi nui ʻia ka ikaika o ke kukui i kālele ʻia, ʻaʻole ia e kūpono i ka hoʻopili ʻana o ke kahua ikaika o ka laser super ultra-short.

Kiʻi 1 (a) ke kūlou ʻana o ke alo pulse i hana ʻia e ka prism a me ke grating, a me (b) ka hopena o ka hoʻololi ʻana o ke alo pulse ma ke kahua mālamalama manawa-lewa ma ka pahuhopu

Ka mana wikiwiki o ka pulse o ka ikaika loalaser pōkole loa
I kēia manawa, ua hōʻike nā kukuna Bessel i hana ʻia e ka superposition conical o nā nalu mokulele i ka waiwai noi i ka physics laser kahua kiʻekiʻe. Inā he axisymmetric pulse front distribution kahi kukuna pulsed i hoʻohui ʻia i ka conically, a laila hiki i ka ikaika kikowaena geometric o ka pūʻolo nalu X-ray i hana ʻia e like me ka mea i hōʻike ʻia ma ke Kiʻi 2 ke superluminal mau, subluminal mau, superluminal wikiwiki, a me ka subluminal decelerated. ʻOiai ka hui pū ʻana o ke aniani deformable a me ka modulator kukui spatial ʻano phase hiki ke hana i ke ʻano spatio-temporal arbitrary o ke alo pulse, a laila hana i ka wikiwiki hoʻoili hiki ke hoʻokele ʻia. Hiki i ka hopena kino ma luna a me kāna ʻenehana modulation ke hoʻololi i ka "distortion" o ke alo pulse i "control" o ke alo pulse, a laila hoʻomaopopo i ke kumu o ka hoʻololi ʻana i ka wikiwiki o ka hoʻoili ʻana o ka laser ultra-strong ultra-short.

KII. 2 Aia nā pulse kukui māmā (a) mau ma mua o ka mālamalama, (b) kukui māmā mau, (c) wikiwiki ma mua o ka mālamalama, a me (d) hoʻēmi ʻia o ka kukui māmā i hana ʻia e ka superposition ma ke kikowaena geometric o ka ʻāpana superposition.

ʻOiai ua ʻoi aku ka mua o ka ʻike ʻia ʻana o ka pulse front distortion ma mua o ka laser super ultra-short, ua hopohopo nui ʻia me ka hoʻomohala ʻana o ka laser super ultra-short. No ka manawa lōʻihi, ʻaʻole ia he mea kūpono i ka hoʻokō ʻana i ka pahuhopu nui o ka laser super ultra-short - ka ikaika o ke kukui ultra-kiʻekiʻe, a ke hana nei nā mea noiʻi e kāohi a hoʻopau paha i nā ʻano pulse front distortion like ʻole. I kēia lā, i ka wā i ulu ai ka "pulse front distortion" i "pulse front control", ua hoʻokō ia i ka hoʻoponopono ʻana i ka wikiwiki o ka hoʻouna ʻana o ka laser super ultra-short, e hāʻawi ana i nā ʻano hou a me nā manawa kūpono hou no ka hoʻohana ʻana o ka laser super ultra-short i ka physics laser kiʻekiʻe.