Femtosecond pulse generation from a Ti3+:Sapphire laser near 800 nm with voltage reconfigurable graphene saturable absorbers
| العنوان: | Femtosecond pulse generation from a Ti3+:Sapphire laser near 800 nm with voltage reconfigurable graphene saturable absorbers |
|---|---|
| المؤلفون: | Nurbek Kakenov, Alphan Sennaroglu, Sarper Ozharar, Isinsu Baylam, Coskun Kocabas |
| المصدر: | Baylam, I, Ozharar, S, Kakenov, N, Kocabas, C & Sennaroglu, A 2017, ' Femtosecond pulse generation from a Ti 3+ : Sapphire laser near 800 nm with voltage reconfigurable graphene saturable absorbers ', Optics Letters, vol. 42, no. 7, pp. 1404-1407 . https://doi.org/10.1364/OL.42.001404 Optics Letters |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Materials science, Sapphire, Electromagnetic pulse, 02 engineering and technology, Femtosecond pulse generation, 01 natural sciences, Pulse repetition rate, law.invention, 010309 optics, Electrolytes, Optics, law, Fiber laser, 0103 physical sciences, Dispersion (optics), Dispersion control, Dispersion (waves), Linear absorption, Absorption (electromagnetic radiation), Semiconductor quantum wells, Power performance, Supercapacitor, business.industry, Transform-limited pulse, Voltage-controlled, Biasing, Saturable absorption, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, Visible wavelengths, Bias voltage, Femtosecond, Graphene saturable absorbers, Optoelectronics, Saturable absorbers, Gold, Graphene, 0210 nano-technology, business |
| الوصف: | We experimentally show that a voltage-controlled graphene-gold supercapacitor saturable absorber (VCG-gold-SA) can be operated as a fast saturable absorber with adjustable linear absorption at wavelengths as low as 795 nm. This was made possible by the use of a novel supercapacitor architecture, consisting of a high-dielectric electrolyte sandwiched between a graphene and a gold electrode. The high-dielectric electrolyte allowed continuous, reversible adjustment of the Fermi level and, hence, the optical loss of the VCG-gold-SA up to the visible wavelengths at low bias voltages of the order of a few volts (0-2 V). The fast saturable absorber action of the VCG-gold-SA and the bias-dependent reduction of its loss were successfully demonstrated inside a femtosecond Ti3+ : sapphire laser operating near 800 nm. Dispersion compensation was employed by using dispersion control mirrors and a prism pair. At a bias voltage of 1.2 V, the laser operated with improved power performance in comparison with that at zero bias, and the VCG-gold-SA initiated the generation of nearly transform-limited pulses as short as 48 fs at a pulse repetition rate of 131.7MHz near 830 nm. To the best of our knowledge, this represents the shortest wavelength where a VCG-gold-SA has been employed as a mode locker with adjustable loss. (C) 2017 Optical Society of America |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.1364/OL.42.001404 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c3d6dbd2960f2d13f2998471439f914 https://doi.org/10.1364/OL.42.001404 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5c3d6dbd2960f2d13f2998471439f914 |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.1364/OL.42.001404 |
|---|