نتایج جستجو برای: distributed feedback laser

تعداد نتایج: 586503  

Journal: :Optics letters 2010
W Liang V S Ilchenko A A Savchenkov A B Matsko D Seidel L Maleki

We demonstrate a miniature self-injection locked distributed-feedback laser using resonant optical feedback from a high-Q crystalline whispering-gallery-mode resonator. The linewidth reduction factor is greater than 10,000, with resultant instantaneous linewidth of less than 200 Hz. The minimal value of the Allan deviation for the laser-frequency stability is 3 x 10(-12) at the integration time...

Journal: :iranian journal of medical physics 0
mohammad sadegh nourbakhsh phd student in biomaterials, amirkabir university of technology, tehran, iran. mohammad etrati khosroshahi associated professor, faculty of biomedical engineering, amirkabir university of technology, tehran, iran. sohrab saremi m.sc in bioelectric engineering, islamic azad university, tehran, iran. shahram rabbani assistant professor, tehran heart center, tehran university of medical sciences, tehran, iran amir hooshyar m.sc in biomechanics engineering, amirkabir university of technology, tehran, iran. farhad tabatabaee6 assistant professor, biomedical engineering dept., amirkabir university of technology, tehran, iran.

introduction: laser tissue soldering using albumin and indocyanine green dye (icg) is an effective technique utilized in various surgical procedures. the purpose of this study was to perform laser soldering of rat skin under a feedback control system and compare the results with those obtained using standard sutures. material and methods: skin incisions were made over eight rats’ dorsa, which w...

Journal: :Optics express 2011
Ilya D Vatnik Dmitriy V Churkin Sergey A Babin Sergei K Turitsyn

We demonstrate a CW random distributed feedback Raman fiber laser operating in a 1.2 μm spectral band. The laser generates up to 3.8 W of the quasi-CW radiation at 1175 nm with the narrow spectrum of 1 nm. Conversion efficiency reaches 60%. Up to 1 W is generated at the second Stokes wavelength of 1242 nm. It is shown that the generation spectrum of RDFB Raman fiber laser is much narrower than ...

Journal: :TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES 2014

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