Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm

Daiki Okazaki; Hayato Arai; Esko I. Kauppinen; Shohei Chiashi; Shigeo Maruyama; Satoshi Ashihara

doi:10.1109/CLEOE-EQEC.2019.8873232

Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm

Daiki Okazaki, Hayato Arai, Esko I. Kauppinen, Shohei Chiashi, Shigeo Maruyama, Satoshi Ashihara

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Ultrashort pulses in the mid-infrared (mid-IR) region have a great potential in the applications of advanced vibrational spectroscopy and strong field phenomena. Traditionally, mid-IR ultrashort pulses are generated by frequency conversion of near-infrared pulses from Ti:S or Yb-based lasers. Laser oscillators which directly emit mid-IR femtosecond pulses are advantageous from the perspectives of simplicity and energy extraction efficiency. Cr:ZnS is an attractive gain medium for mid-IR ultrafast lasers because it has a broad fluorescence spectrum, large stimulated-emission cross-section and high thermal conductivity [1]. So far, passive mode-locking has been realized for Cr:ZnS laser, by employing Kerr-lensing, or by using saturable absorbers based on semiconductors or graphenes [2]. A single walled carbon nanotube (SWCNT) film is also known as a good candidate for saturable absorbers, possessing tunable resonance and large modulation depth. However, SWCNTs have rarely been applied to this laser [3]. Here, we demonstrate self-starting mode-locked oscillation of Cr:ZnS laser by using a SWCNT film which has resonant absorption at the laser emission wavelength of 2.4 μm.

Original language	English
Title of host publication	2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019
Publisher	IEEE
ISBN (Electronic)	9781728104690
DOIs	https://doi.org/10.1109/CLEOE-EQEC.2019.8873232
Publication status	Published - 1 Jun 2019
MoE publication type	A4 Conference publication
Event	European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference - Munich, Germany Duration: 23 Jun 2019 → 27 Jun 2019

Conference

Conference	European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
Abbreviated title	CLEO/Europe-EQEC
Country/Territory	Germany
City	Munich
Period	23/06/2019 → 27/06/2019

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10.1109/CLEOE-EQEC.2019.8873232

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Okazaki, D., Arai, H., Kauppinen, E. I., Chiashi, S., Maruyama, S., & Ashihara, S. (2019). Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm. In 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019 Article 8873232 IEEE. https://doi.org/10.1109/CLEOE-EQEC.2019.8873232

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title = "Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm",

abstract = "Ultrashort pulses in the mid-infrared (mid-IR) region have a great potential in the applications of advanced vibrational spectroscopy and strong field phenomena. Traditionally, mid-IR ultrashort pulses are generated by frequency conversion of near-infrared pulses from Ti:S or Yb-based lasers. Laser oscillators which directly emit mid-IR femtosecond pulses are advantageous from the perspectives of simplicity and energy extraction efficiency. Cr:ZnS is an attractive gain medium for mid-IR ultrafast lasers because it has a broad fluorescence spectrum, large stimulated-emission cross-section and high thermal conductivity [1]. So far, passive mode-locking has been realized for Cr:ZnS laser, by employing Kerr-lensing, or by using saturable absorbers based on semiconductors or graphenes [2]. A single walled carbon nanotube (SWCNT) film is also known as a good candidate for saturable absorbers, possessing tunable resonance and large modulation depth. However, SWCNTs have rarely been applied to this laser [3]. Here, we demonstrate self-starting mode-locked oscillation of Cr:ZnS laser by using a SWCNT film which has resonant absorption at the laser emission wavelength of 2.4 μm.",

author = "Daiki Okazaki and Hayato Arai and Kauppinen, {Esko I.} and Shohei Chiashi and Shigeo Maruyama and Satoshi Ashihara",

year = "2019",

month = jun,

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doi = "10.1109/CLEOE-EQEC.2019.8873232",

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booktitle = "2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019",

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note = "European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, CLEO/Europe-EQEC ; Conference date: 23-06-2019 Through 27-06-2019",

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Okazaki, D, Arai, H, Kauppinen, EI, Chiashi, S, Maruyama, S & Ashihara, S 2019, Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm. in 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019., 8873232, IEEE, European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, Munich, Germany, 23/06/2019. https://doi.org/10.1109/CLEOE-EQEC.2019.8873232

Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm. / Okazaki, Daiki; Arai, Hayato; Kauppinen, Esko I. et al.
2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. IEEE, 2019. 8873232.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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T1 - Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm

AU - Okazaki, Daiki

AU - Arai, Hayato

AU - Kauppinen, Esko I.

AU - Chiashi, Shohei

AU - Maruyama, Shigeo

AU - Ashihara, Satoshi

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Ultrashort pulses in the mid-infrared (mid-IR) region have a great potential in the applications of advanced vibrational spectroscopy and strong field phenomena. Traditionally, mid-IR ultrashort pulses are generated by frequency conversion of near-infrared pulses from Ti:S or Yb-based lasers. Laser oscillators which directly emit mid-IR femtosecond pulses are advantageous from the perspectives of simplicity and energy extraction efficiency. Cr:ZnS is an attractive gain medium for mid-IR ultrafast lasers because it has a broad fluorescence spectrum, large stimulated-emission cross-section and high thermal conductivity [1]. So far, passive mode-locking has been realized for Cr:ZnS laser, by employing Kerr-lensing, or by using saturable absorbers based on semiconductors or graphenes [2]. A single walled carbon nanotube (SWCNT) film is also known as a good candidate for saturable absorbers, possessing tunable resonance and large modulation depth. However, SWCNTs have rarely been applied to this laser [3]. Here, we demonstrate self-starting mode-locked oscillation of Cr:ZnS laser by using a SWCNT film which has resonant absorption at the laser emission wavelength of 2.4 μm.

AB - Ultrashort pulses in the mid-infrared (mid-IR) region have a great potential in the applications of advanced vibrational spectroscopy and strong field phenomena. Traditionally, mid-IR ultrashort pulses are generated by frequency conversion of near-infrared pulses from Ti:S or Yb-based lasers. Laser oscillators which directly emit mid-IR femtosecond pulses are advantageous from the perspectives of simplicity and energy extraction efficiency. Cr:ZnS is an attractive gain medium for mid-IR ultrafast lasers because it has a broad fluorescence spectrum, large stimulated-emission cross-section and high thermal conductivity [1]. So far, passive mode-locking has been realized for Cr:ZnS laser, by employing Kerr-lensing, or by using saturable absorbers based on semiconductors or graphenes [2]. A single walled carbon nanotube (SWCNT) film is also known as a good candidate for saturable absorbers, possessing tunable resonance and large modulation depth. However, SWCNTs have rarely been applied to this laser [3]. Here, we demonstrate self-starting mode-locked oscillation of Cr:ZnS laser by using a SWCNT film which has resonant absorption at the laser emission wavelength of 2.4 μm.

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M3 - Conference article in proceedings

BT - 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019

PB - IEEE

T2 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference

Y2 - 23 June 2019 through 27 June 2019

ER -

Mode-locked oscillation of Cr:ZnS laser using a single walled carbon nanotube film with resonant absorption at 2.4 μm

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