Fiber lasers with phosphate photonic crystal and multicore fibers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Heavily doped optical fibers of very short length are attractive solutions for laser sources in compact integrated devices and high power single frequency lasers. 1 Utilizing heavily Er-Yb-codoped phosphate step-index fibers 7-cm in length, a record-high output power density of 1.33 W/cm of slightly multimode (M 2<4.0) at 1.5 μm was achieved while the single-mode output power density was only ∼0.5 W/cm because of its reduced core size [1, 2]. To obtain large-mode-area single-mode output, optical fibers with photonic crystal (PC) cladding have been investigated for the interesting endless single-mode behavior. Novel phosphate PC fibers with doped cores have been manufactured and large fundamental mode (>400 μm 2) operations have been achieved with properly designed PC fibers [3]. Therefore, phosphate PC fibers provide the potential to build high power fiber laser of very short active length. We demonstrated around 5 W from a PC fiber laser with only 3.5 cm of active fiber length (see Fig. 1) [4]. In this device the single-mode output power density has been significantly improved to 1.34 W/cm with a slope efficiency of ∼20% with respect to the launched pump. The output spectrum is centered at 1535 nm with a linewidth of ∼2 nm. Furthermore, utilizing a phosphate PC fiber of 3.8 cm length in combination with a narrow linewidth fiber Bragg grating, single frequency output at 1534 nm has been obtained and confirmed with heterodyne measurements. A maximum single frequency output power of 2.3 W is demonstrated and the slope efficiency is ∼12% up to pump power of 20 W. This is the first single-frequency fiber laser that is fabricated with PC fiber, instead of the standard step-index fiber, in the active laser cavity. We also demonstrated the application of multicore fibers to build compact fiber lasers with even higher output powers. Fig. 2 shows that more than 15 W of 1.5 μm signal power can be generated from a 10 cm long fiber that contains 19 active cores. Through fiber design the emission from these cores is coherently combined through evanescent field coupling, as will be described in the presentation. In summary, active phosphate PC fibers with large fundamental mode areas have been demonstrated for miniature high-power high-brightness and single frequency fiber lasers at 1.5 μm. This work is supported by the Air Force Office of Scientific Research through a MRI program No. F49620-02-1-0380, National Sciences Foundation grant No. 0335101, and the state of Arizona TRIF Photonics Initiative.

Original languageEnglish (US)
Title of host publicationLEOS Summer Topical Meeting
Pages29-30
Number of pages2
StatePublished - 2006
Event2006 LEOS Summer Topical Meetings - Quebec City, QC, Canada
Duration: Jul 17 2006Jul 19 2006

Other

Other2006 LEOS Summer Topical Meetings
CountryCanada
CityQuebec City, QC
Period7/17/067/19/06

Fingerprint

Fiber lasers
Photonic crystals
fiber lasers
phosphates
Phosphates
photonics
fibers
Fibers
crystals
output
Linewidth
radiant flux density
Pumps
Evanescent fields
pumps
slopes
Lasers
Laser resonators
High power lasers
Fiber Bragg gratings

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Peyghambarian, N. N., Schülzgen, A., Li, L., Temyanko, V. L., Moloney, J. V., & Li, H. (2006). Fiber lasers with phosphate photonic crystal and multicore fibers. In LEOS Summer Topical Meeting (pp. 29-30). [1694022]

Fiber lasers with phosphate photonic crystal and multicore fibers. / Peyghambarian, Nasser N; Schülzgen, A.; Li, L.; Temyanko, Valery L; Moloney, Jerome V; Li, H.

LEOS Summer Topical Meeting. 2006. p. 29-30 1694022.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Peyghambarian, NN, Schülzgen, A, Li, L, Temyanko, VL, Moloney, JV & Li, H 2006, Fiber lasers with phosphate photonic crystal and multicore fibers. in LEOS Summer Topical Meeting., 1694022, pp. 29-30, 2006 LEOS Summer Topical Meetings, Quebec City, QC, Canada, 7/17/06.
Peyghambarian NN, Schülzgen A, Li L, Temyanko VL, Moloney JV, Li H. Fiber lasers with phosphate photonic crystal and multicore fibers. In LEOS Summer Topical Meeting. 2006. p. 29-30. 1694022
@inproceedings{858ffef8a6da4f1a83bbe8d57981ea87,
title = "Fiber lasers with phosphate photonic crystal and multicore fibers",
abstract = "Heavily doped optical fibers of very short length are attractive solutions for laser sources in compact integrated devices and high power single frequency lasers. 1 Utilizing heavily Er-Yb-codoped phosphate step-index fibers 7-cm in length, a record-high output power density of 1.33 W/cm of slightly multimode (M 2<4.0) at 1.5 μm was achieved while the single-mode output power density was only ∼0.5 W/cm because of its reduced core size [1, 2]. To obtain large-mode-area single-mode output, optical fibers with photonic crystal (PC) cladding have been investigated for the interesting endless single-mode behavior. Novel phosphate PC fibers with doped cores have been manufactured and large fundamental mode (>400 μm 2) operations have been achieved with properly designed PC fibers [3]. Therefore, phosphate PC fibers provide the potential to build high power fiber laser of very short active length. We demonstrated around 5 W from a PC fiber laser with only 3.5 cm of active fiber length (see Fig. 1) [4]. In this device the single-mode output power density has been significantly improved to 1.34 W/cm with a slope efficiency of ∼20{\%} with respect to the launched pump. The output spectrum is centered at 1535 nm with a linewidth of ∼2 nm. Furthermore, utilizing a phosphate PC fiber of 3.8 cm length in combination with a narrow linewidth fiber Bragg grating, single frequency output at 1534 nm has been obtained and confirmed with heterodyne measurements. A maximum single frequency output power of 2.3 W is demonstrated and the slope efficiency is ∼12{\%} up to pump power of 20 W. This is the first single-frequency fiber laser that is fabricated with PC fiber, instead of the standard step-index fiber, in the active laser cavity. We also demonstrated the application of multicore fibers to build compact fiber lasers with even higher output powers. Fig. 2 shows that more than 15 W of 1.5 μm signal power can be generated from a 10 cm long fiber that contains 19 active cores. Through fiber design the emission from these cores is coherently combined through evanescent field coupling, as will be described in the presentation. In summary, active phosphate PC fibers with large fundamental mode areas have been demonstrated for miniature high-power high-brightness and single frequency fiber lasers at 1.5 μm. This work is supported by the Air Force Office of Scientific Research through a MRI program No. F49620-02-1-0380, National Sciences Foundation grant No. 0335101, and the state of Arizona TRIF Photonics Initiative.",
author = "Peyghambarian, {Nasser N} and A. Sch{\"u}lzgen and L. Li and Temyanko, {Valery L} and Moloney, {Jerome V} and H. Li",
year = "2006",
language = "English (US)",
isbn = "1424400902",
pages = "29--30",
booktitle = "LEOS Summer Topical Meeting",

}

TY - GEN

T1 - Fiber lasers with phosphate photonic crystal and multicore fibers

AU - Peyghambarian, Nasser N

AU - Schülzgen, A.

AU - Li, L.

AU - Temyanko, Valery L

AU - Moloney, Jerome V

AU - Li, H.

PY - 2006

Y1 - 2006

N2 - Heavily doped optical fibers of very short length are attractive solutions for laser sources in compact integrated devices and high power single frequency lasers. 1 Utilizing heavily Er-Yb-codoped phosphate step-index fibers 7-cm in length, a record-high output power density of 1.33 W/cm of slightly multimode (M 2<4.0) at 1.5 μm was achieved while the single-mode output power density was only ∼0.5 W/cm because of its reduced core size [1, 2]. To obtain large-mode-area single-mode output, optical fibers with photonic crystal (PC) cladding have been investigated for the interesting endless single-mode behavior. Novel phosphate PC fibers with doped cores have been manufactured and large fundamental mode (>400 μm 2) operations have been achieved with properly designed PC fibers [3]. Therefore, phosphate PC fibers provide the potential to build high power fiber laser of very short active length. We demonstrated around 5 W from a PC fiber laser with only 3.5 cm of active fiber length (see Fig. 1) [4]. In this device the single-mode output power density has been significantly improved to 1.34 W/cm with a slope efficiency of ∼20% with respect to the launched pump. The output spectrum is centered at 1535 nm with a linewidth of ∼2 nm. Furthermore, utilizing a phosphate PC fiber of 3.8 cm length in combination with a narrow linewidth fiber Bragg grating, single frequency output at 1534 nm has been obtained and confirmed with heterodyne measurements. A maximum single frequency output power of 2.3 W is demonstrated and the slope efficiency is ∼12% up to pump power of 20 W. This is the first single-frequency fiber laser that is fabricated with PC fiber, instead of the standard step-index fiber, in the active laser cavity. We also demonstrated the application of multicore fibers to build compact fiber lasers with even higher output powers. Fig. 2 shows that more than 15 W of 1.5 μm signal power can be generated from a 10 cm long fiber that contains 19 active cores. Through fiber design the emission from these cores is coherently combined through evanescent field coupling, as will be described in the presentation. In summary, active phosphate PC fibers with large fundamental mode areas have been demonstrated for miniature high-power high-brightness and single frequency fiber lasers at 1.5 μm. This work is supported by the Air Force Office of Scientific Research through a MRI program No. F49620-02-1-0380, National Sciences Foundation grant No. 0335101, and the state of Arizona TRIF Photonics Initiative.

AB - Heavily doped optical fibers of very short length are attractive solutions for laser sources in compact integrated devices and high power single frequency lasers. 1 Utilizing heavily Er-Yb-codoped phosphate step-index fibers 7-cm in length, a record-high output power density of 1.33 W/cm of slightly multimode (M 2<4.0) at 1.5 μm was achieved while the single-mode output power density was only ∼0.5 W/cm because of its reduced core size [1, 2]. To obtain large-mode-area single-mode output, optical fibers with photonic crystal (PC) cladding have been investigated for the interesting endless single-mode behavior. Novel phosphate PC fibers with doped cores have been manufactured and large fundamental mode (>400 μm 2) operations have been achieved with properly designed PC fibers [3]. Therefore, phosphate PC fibers provide the potential to build high power fiber laser of very short active length. We demonstrated around 5 W from a PC fiber laser with only 3.5 cm of active fiber length (see Fig. 1) [4]. In this device the single-mode output power density has been significantly improved to 1.34 W/cm with a slope efficiency of ∼20% with respect to the launched pump. The output spectrum is centered at 1535 nm with a linewidth of ∼2 nm. Furthermore, utilizing a phosphate PC fiber of 3.8 cm length in combination with a narrow linewidth fiber Bragg grating, single frequency output at 1534 nm has been obtained and confirmed with heterodyne measurements. A maximum single frequency output power of 2.3 W is demonstrated and the slope efficiency is ∼12% up to pump power of 20 W. This is the first single-frequency fiber laser that is fabricated with PC fiber, instead of the standard step-index fiber, in the active laser cavity. We also demonstrated the application of multicore fibers to build compact fiber lasers with even higher output powers. Fig. 2 shows that more than 15 W of 1.5 μm signal power can be generated from a 10 cm long fiber that contains 19 active cores. Through fiber design the emission from these cores is coherently combined through evanescent field coupling, as will be described in the presentation. In summary, active phosphate PC fibers with large fundamental mode areas have been demonstrated for miniature high-power high-brightness and single frequency fiber lasers at 1.5 μm. This work is supported by the Air Force Office of Scientific Research through a MRI program No. F49620-02-1-0380, National Sciences Foundation grant No. 0335101, and the state of Arizona TRIF Photonics Initiative.

UR - http://www.scopus.com/inward/record.url?scp=34547344378&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547344378&partnerID=8YFLogxK

M3 - Conference contribution

SN - 1424400902

SN - 9781424400904

SP - 29

EP - 30

BT - LEOS Summer Topical Meeting

ER -