METHOD OF GENERATING ULTRA-SHORT LIGHT PULSES,申请号RU20110109511-传众专利搜索

METHOD OF GENERATING ULTRA-SHORT LIGHT PULSES

申请公布号：RU2469450(C2)

申请号：RU20110109511

申请日期：2011.03.14

申请公布日期：2012.12.10

申请人：

FEDERAL'NOE GOSUDARSTVENNOE BJUDZHETNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "SANKT-PETERBURGSKIJ NATSIONAL'NYJ ISSLEDOVATEL'SKIJ UNIVERSITET INFORMATSIONNYKH TEKHNOLOGIJ, MEKHANIKI I OPTIKI" (NIU ITMO)

发明人：KOZLOV VIKTOR VIKTOROVICH;ROZANOV NIKOLAJ NIKOLAEVICH;VABNITS STEFANO

分类号：H01S3/098;H01S3/094

主分类号：H01S3/098

摘要：FIELD: physics.SUBSTANCE: method of generating ultra-short light pulses during passive mode locking by intracavity absorbing medium relates to laser physics and can be used to make laser sources of stable light pulses with femto-attosecond duration. The method involves generating light pulses with a spectrum wider than the gain line spectrum, wherein total linear intracavity field loss and mirror loss exceed linear gain of the gain medium; the absorbing and gain medium are selected using one or different materials and the value of the dipole moment of the amplifying transition of the gain and absorbing media is greater than 1 D. The laser generates pulses with duration of the order of one period of the laser transition wave. The gain of the gain medium is sufficient to provide a peak Rabi pulse frequency value in the vicinity of the laser transition (10-10Hz), and the ratio of beam cross-sections in the gain and absorbing media is selected in a wide range of values (±30%) near a value equal to the ratio of the dipole moment of the gain medium to twice the dipole moment of the absorbing medium.EFFECT: possibility of generating pulses with duration of one optical period by selecting a gain medium with a large gain value and optical resonance with low mirror loss and using a focusing system which enables to control beam width in the absorbing medium.1 dwg