Effect of the residual doping on the performance of InN epilayers as saturable absorbers for ultrafast lasers at 1.55&\#x00B5;m

Research areas:

• Uncategorized

Year:

2019

Type of Publication:

Article

Keywords:

Fiber lasers; Physical vapor deposition; Saturable absorbers; Ultrafast lasers; Ultrafast optics; Variable optical attenuators

Authors:

• Monroy, L.
• Jiménez-Rodríguez, M.
• Ruterana, P.
• Monroy, E.
• González-Herráez, M.
• Naranjo, F. B.

Journal:

Opt. Mater. Express

Volume:

9

Number:

7

Pages:

2785-2792

Month:

July

BibTex:

@article{Monroy:19, author = "L. Monroy and M. Jim{\'e}nez-Rodr{\'i}guez and P. Ruterana and E. Monroy and M. Gonz{\'a}lez-Herr{\'a}ez and F. B. Naranjo", abstract = "We report on the improvement of performance of InN-based saturable absorbers in fiber lasers operating at 1.55\{\&}amp;\#x2005;\{\&}amp;\#x00B5;m by reducing the residual doping, due to the lower Burstein-Moss effect. The improved tuning of the band-to-band transition with respect to the operation wavelength leads to an enhancement of nonlinear optical effects, resulting in \$30\$30 \{\&}amp;\#x0025; of modulation depth. We introduce the development of an ultrafast mode-locked fiber laser using an improved InN-based saturable absorber that incorporates a buffer layer between the active layer and the substrate. The laser delivers output pulses with a temporal width of \$\{\textblackslash\}sim 220\$$\sim$220 fs, a repetition rate of \$5.25\$5.25 MHz, and high-pulse energy of \$5.8\$5.8 nJ.", doi = "10.1364/OME.9.002785", journal = "Opt. Mater. Express", keywords = "Fiber lasers; Physical vapor deposition; Saturable absorbers; Ultrafast lasers; Ultrafast optics; Variable optical attenuators", month = "Jul", number = "7", pages = "2785--2792", publisher = "OSA", title = "{E}ffect of the residual doping on the performance of {I}n{N} epilayers as saturable absorbers for ultrafast lasers at 1.55{\&}amp;\#x00{B}5;m", url = "http://www.osapublishing.org/ome/abstract.cfm?URI=ome-9-7-2785", volume = "9", year = "2019", }

Abstract:

We report on the improvement of performance of InN-based saturable absorbers in fiber lasers operating at 1.55\&\#x2005;\&\#x00B5;m by reducing the residual doping, due to the lower Burstein-Moss effect. The improved tuning of the band-to-band transition with respect to the operation wavelength leads to an enhancement of nonlinear optical effects, resulting in \$30\$30 \&\#x0025; of modulation depth. We introduce the development of an ultrafast mode-locked fiber laser using an improved InN-based saturable absorber that incorporates a buffer layer between the active layer and the substrate. The laser delivers output pulses with a temporal width of \$\{\textblackslash\}sim 220\$$\sim$220 fs, a repetition rate of \$5.25\$5.25 MHz, and high-pulse energy of \$5.8\$5.8 nJ.