Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Feature Issues

Tunable noise-like pulse generation in mode-locked Tm fiber laser with a SESAM

Yutaka Mashiko, Eisuke Fujita, and Masaki Tokurakawa

Open Access Open Access

Abstract

We report on a tunable noise-like pulse (NLP) generation in a mode-locked Tm fiber laser with a SESAM. A tuning range of 1895-1942 nm, while keeping the spectral bandwidth of 10-19 nm under NLP mode-locked operation, was obtained by a tunable filter based on chromatic dispersion of telescope lenses. At the center wavelength of 1928 nm, the maximum output power of 195 mW with the spectral bandwidth of 18.9 nm was obtained. The repetition rate was 20.5 MHz and the corresponding pulse energy was 9.5 nJ. To our knowledge, this is the first report of a tunable NLP mode-locked laser based on chromatic dispersion of a lens system.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
Tunable noise-like pulse and Q-switched erbium-doped fiber laser

Jing Li, Chuncan Wang, and Peng Wang
Opt. Express 30(4) 4768-4781 (2022)

Amplification of noise-like pulses generated from a graphene-based Tm-doped all-fiber laser

Grzegorz Sobon, Jaroslaw Sotor, Aleksandra Przewolka, Iwona Pasternak, Wlodek Strupinski, and Krzysztof Abramski
Opt. Express 24(18) 20359-20364 (2016)

Ultra-broadband dissipative soliton and noise-like pulse generation from a normal dispersion mode-locked Tm-doped all-fiber laser

Grzegorz Sobon, Jaroslaw Sotor, Tadeusz Martynkien, and Krzysztof M. Abramski
Opt. Express 24(6) 6156-6161 (2016)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)
Fig. 1
Fig. 1 schematic picture of tunable NLP mode-locked Tm fiber laser. The SESAM has modulation depth of 20%, non-saturable loss of 16%, relaxation time of 10 ps, and saturation fluence of 50 μJ/cm2. The Tm fiber has a core diameter of 10 μm, NA of 0.13 and Tm doping level of 0.2 wt.%. The fiber, telescope lenses and the end mirror at the right side also work as a tunable bandpass filter.

Download Full Size | PDF

Fig. 2
Fig. 2 (a) Calculated filter property at specific mirror position for the lenses of focal length of 15 mm (circles), 30 mm (squares) and 60 mm (triangles) and (b) for the lenses made of N-BK7 (circles) and CaF2 (squares).

Download Full Size | PDF

Fig. 3
Fig. 3 (a) Power properties. (b) Spectra in mode-locked pulse with SESAM

Download Full Size | PDF

Fig. 4
Fig. 4 Temporal profile of mode-locked operation measured by 7 GHz oscilloscope. (a) 10 μs time window (b) 200 ns time window (c) 2 ns time window.

Download Full Size | PDF

Fig. 5
Fig. 5 autocorrelation traces. (a) Short term and (b) long term measurement.

Download Full Size | PDF

Fig. 6
Fig. 6 Tunable spectral property as a function of the position of the mirror. (a) CW operation with the HR mirror. (b) NLP mode-locked operation with the SESAM. (b). The insets indicate the relative positions of the mirror.

Download Full Size | PDF

Fig. 7
Fig. 7 Average power and center wavelength as a function of the relative position of the mirror (a) CW operation with HR mirror. (b) NLP Mode-locked operation with SESAM. The circles and solid curve are measured output power and fitting. The squares and doted curve are measured peak wavelength and fitting. The triangles and dashed line is calculated peak wavelength of the tunable filter and fitting.

Download Full Size | PDF

Tables (1)

Tables Icon

Table 1 Calculated FWHM of the filter for different lens combinations.

View Table
Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use