Vikram, BS and Prakash, R and Selvaraja, SK and Supradeepa, VR (2020) Enhanced nonlinear spectral broadening and sub-picosecond pulse generation by adaptive spectral phase optimization of electro-optic frequency combs. In: Optics Express, 28 (8). pp. 11215-11226.
|
PDF
opt_exp_28-08_11215-11216_2020.pdf - Published Version Download (1MB) | Preview |
Abstract
We utilize adaptive optimization to enhance the spectral broadening of an amplified electro-optic frequency comb with a 25 GHz repetition rate in a highly nonlinear fiber and subsequently generate sub-picosecond pulses. The spectral phase of the comb is adaptively optimized by a Fourier pulse shaper in a closed control loop with the HNLF output spectrum as the process variable to be optimized. Enhanced spectral broadening also increases the stimulated Brillouin scattering threshold allowing increased power scaling and thereby boosting the bandwidth by a factor of more than 13 times over the initial comb. System versatility to varying conditions is demonstrated by achieving consistent bandwidth enhancement (nearly or more than 100 lines) in varying operating conditions that distort the temporal profile of the comb. In all cases, the optimization yields a near transform limited pulse that enters the nonlinear fiber. Sub-picosecond pulse generation is achieved with a short length of single mode fiber post the nonlinear fiber. © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
| Item Type: | Journal Article |
|---|---|
| Publication: | Optics Express |
| Publisher: | OPTICAL SOC AMER |
| Additional Information: | The copyright of this article belongs to OPTICAL SOC AMER |
| Keywords: | Bandwidth; Brillouin scattering; Fibers; Nonlinear optics; Pulse shaping; Single mode fibers, Adaptive optimization; Bandwidth enhancement; Closed control loop; Highly nonlinear fibers; Operating condition; Spectral broadening; Stimulated Brillouin scattering threshold; Transform-limited pulse, Pulse repetition rate |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 10 Aug 2020 08:48 |
| Last Modified: | 10 Aug 2020 08:48 |
| URI: | http://eprints.iisc.ac.in/id/eprint/65221 |
Actions (login required)
 |
View Item |
