Fast switching between continuous-wave and passively mode-locked regimes of Nd: YVO4 and Cr: LiSAF lasers

V. G. Savitski; D. Burns; S. Calvez

doi:10.1109/CLEOE-EQEC.2009.5192798

Fast switching between continuous-wave and passively mode-locked regimes of Nd: YVO4 and Cr: LiSAF lasers

V. G. Savitski, D. Burns, S. Calvez

Institute Of Photonics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

1 Citation (Scopus)

Abstract

We present the use of an optically-pumped saturable absorber (SA) inside Nd:YVO 4 and Cr:LiSAF lasers as a viable method to remotely control the laser mode of operation. CW operation in both lasers was obtained by cooling the SAs down to -10degC with a thermo-electric cooler. Two types of the SAs were used: the first one, originally designed as the active region of a semiconductor disk laser, was employed in picosecond Nd:YVO 4 laser, while the second one, a semiconductor Bragg reflector, was used in femtosecond Cr:LiSAF laser. The external pump power necessary to promote a given operational state in the case of Nd:YVO 4 laser was dependent on the laser pump power but in the case of Cr:LiSAF laser, the regime of operation itself was not dependent upon the external pump power. Finite element thermal analysis of the SA in the Nd:YVO 4 laser has been performed in order to evaluate the average temperature changes induced by external pumping, and to compare these figures with those experimentally obtained by heating the device with the TEC. Stable CW and CW ML operation of the lasers occurred when the SA mount temperature was set to -10 and +1degC.

Original language	English
Title of host publication	CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
Place of Publication	Munich
Publisher	IEEE
ISBN (Print)	9781424440801
DOIs	https://doi.org/10.1109/CLEOE-EQEC.2009.5192798
Publication status	Published - 20 Nov 2009
Event	CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference - Munich, Germany Duration: 14 Jun 2009 → 19 Jun 2009

Conference

Conference	CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
Country/Territory	Germany
City	Munich
Period	14/06/09 → 19/06/09

Keywords

semiconductor lasers
pump lasers
laser excitation
laser mode locking
power lasers
ultrafast optics
temperature
optical pumping
optical control
cooling

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10.1109/CLEOE-EQEC.2009.5192798

Cite this

@inproceedings{c494a366345a48798f4b8572602d72de,

title = "Fast switching between continuous-wave and passively mode-locked regimes of Nd: YVO4 and Cr: LiSAF lasers",

abstract = "We present the use of an optically-pumped saturable absorber (SA) inside Nd:YVO 4 and Cr:LiSAF lasers as a viable method to remotely control the laser mode of operation. CW operation in both lasers was obtained by cooling the SAs down to -10degC with a thermo-electric cooler. Two types of the SAs were used: the first one, originally designed as the active region of a semiconductor disk laser, was employed in picosecond Nd:YVO 4 laser, while the second one, a semiconductor Bragg reflector, was used in femtosecond Cr:LiSAF laser. The external pump power necessary to promote a given operational state in the case of Nd:YVO 4 laser was dependent on the laser pump power but in the case of Cr:LiSAF laser, the regime of operation itself was not dependent upon the external pump power. Finite element thermal analysis of the SA in the Nd:YVO 4 laser has been performed in order to evaluate the average temperature changes induced by external pumping, and to compare these figures with those experimentally obtained by heating the device with the TEC. Stable CW and CW ML operation of the lasers occurred when the SA mount temperature was set to -10 and +1degC.",

keywords = "semiconductor lasers, pump lasers, laser excitation, laser mode locking, power lasers, ultrafast optics, temperature, optical pumping, optical control, cooling",

author = "Savitski, {V. G.} and D. Burns and S. Calvez",

year = "2009",

month = nov,

day = "20",

doi = "10.1109/CLEOE-EQEC.2009.5192798",

language = "English",

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booktitle = "CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference",

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note = "CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference ; Conference date: 14-06-2009 Through 19-06-2009",

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Savitski, VG, Burns, D & Calvez, S 2009, Fast switching between continuous-wave and passively mode-locked regimes of Nd: YVO4 and Cr: LiSAF lasers. in CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference. IEEE, Munich , CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, Munich, Germany, 14/06/09. https://doi.org/10.1109/CLEOE-EQEC.2009.5192798

Fast switching between continuous-wave and passively mode-locked regimes of Nd: YVO4 and Cr: LiSAF lasers. / Savitski, V. G.; Burns, D.; Calvez, S.
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference. Munich : IEEE, 2009.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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T1 - Fast switching between continuous-wave and passively mode-locked regimes of Nd

T2 - CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference

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AU - Burns, D.

AU - Calvez, S.

PY - 2009/11/20

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N2 - We present the use of an optically-pumped saturable absorber (SA) inside Nd:YVO 4 and Cr:LiSAF lasers as a viable method to remotely control the laser mode of operation. CW operation in both lasers was obtained by cooling the SAs down to -10degC with a thermo-electric cooler. Two types of the SAs were used: the first one, originally designed as the active region of a semiconductor disk laser, was employed in picosecond Nd:YVO 4 laser, while the second one, a semiconductor Bragg reflector, was used in femtosecond Cr:LiSAF laser. The external pump power necessary to promote a given operational state in the case of Nd:YVO 4 laser was dependent on the laser pump power but in the case of Cr:LiSAF laser, the regime of operation itself was not dependent upon the external pump power. Finite element thermal analysis of the SA in the Nd:YVO 4 laser has been performed in order to evaluate the average temperature changes induced by external pumping, and to compare these figures with those experimentally obtained by heating the device with the TEC. Stable CW and CW ML operation of the lasers occurred when the SA mount temperature was set to -10 and +1degC.

AB - We present the use of an optically-pumped saturable absorber (SA) inside Nd:YVO 4 and Cr:LiSAF lasers as a viable method to remotely control the laser mode of operation. CW operation in both lasers was obtained by cooling the SAs down to -10degC with a thermo-electric cooler. Two types of the SAs were used: the first one, originally designed as the active region of a semiconductor disk laser, was employed in picosecond Nd:YVO 4 laser, while the second one, a semiconductor Bragg reflector, was used in femtosecond Cr:LiSAF laser. The external pump power necessary to promote a given operational state in the case of Nd:YVO 4 laser was dependent on the laser pump power but in the case of Cr:LiSAF laser, the regime of operation itself was not dependent upon the external pump power. Finite element thermal analysis of the SA in the Nd:YVO 4 laser has been performed in order to evaluate the average temperature changes induced by external pumping, and to compare these figures with those experimentally obtained by heating the device with the TEC. Stable CW and CW ML operation of the lasers occurred when the SA mount temperature was set to -10 and +1degC.

KW - semiconductor lasers

KW - pump lasers

KW - laser excitation

KW - laser mode locking

KW - power lasers

KW - ultrafast optics

KW - temperature

KW - optical pumping

KW - optical control

KW - cooling

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DO - 10.1109/CLEOE-EQEC.2009.5192798

M3 - Conference contribution book

AN - SCOPUS:70449578322

SN - 9781424440801

BT - CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference

PB - IEEE

CY - Munich

Y2 - 14 June 2009 through 19 June 2009

ER -

Fast switching between continuous-wave and passively mode-locked regimes of Nd: YVO4 and Cr: LiSAF lasers

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