Laser performance of Ng-cut flash-lamp pumped Nd: KGW at high repetition rates

K. V. Yumashev, Vasili Savitski, N. V. Kuleshov, A. A. Pavlyuk, D. D. Molotkov, A. L. Protasenya

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A comparative study of the flash-lamp pumped laser performance of standard b-grown Nd:KGW and Nd:KGW grown for propagation along the optical axis N-g is presented. The results show that, in comparison with b-grown crystal, the N-g-grown Nd:KGW is very promising for use at high repetition flash-lamp pumping rates. With the same laser cavity configuration, the N-g-grown Nd:KGW can operate at an average flash-lamp input power of at least 1.4 kW, while the b-cut one ceases lasing at average flash-lamp input power of similar to 0.5 kW. The reason for this is that the thermal lens induced in the N-g-oriented Nd:KGW rod under pump radiation is relatively weak, nearly spherical and positive, whereas the b-grown Nd:KGW rod acts as a quite weak positive lens for radiation with radial polarization, and as a much stronger negative lens for tangentially polarized radiation.

LanguageEnglish
Pages39-43
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume89
Issue number1
DOIs
Publication statusPublished - Oct 2007

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flash lamps
repetition
lasers
rods
lenses
polarized radiation
thermal lensing
radiation
laser cavities
lasing
pumping
pumps
propagation
polarization
configurations
crystals

Keywords

  • potassium gadolinium tungstate
  • monoclinic KGD(WO4)(2)
  • YAG
  • crystals

Cite this

Yumashev, K. V., Savitski, V., Kuleshov, N. V., Pavlyuk, A. A., Molotkov, D. D., & Protasenya, A. L. (2007). Laser performance of Ng-cut flash-lamp pumped Nd: KGW at high repetition rates. Applied Physics B: Lasers and Optics, 89(1), 39-43. https://doi.org/10.1007/s00340-007-2732-5
Yumashev, K. V. ; Savitski, Vasili ; Kuleshov, N. V. ; Pavlyuk, A. A. ; Molotkov, D. D. ; Protasenya, A. L. / Laser performance of Ng-cut flash-lamp pumped Nd : KGW at high repetition rates. In: Applied Physics B: Lasers and Optics. 2007 ; Vol. 89, No. 1. pp. 39-43.
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Laser performance of Ng-cut flash-lamp pumped Nd : KGW at high repetition rates. / Yumashev, K. V.; Savitski, Vasili; Kuleshov, N. V.; Pavlyuk, A. A.; Molotkov, D. D.; Protasenya, A. L.

In: Applied Physics B: Lasers and Optics, Vol. 89, No. 1, 10.2007, p. 39-43.

Research output: Contribution to journalArticle

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T1 - Laser performance of Ng-cut flash-lamp pumped Nd

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AU - Yumashev, K. V.

AU - Savitski, Vasili

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AU - Molotkov, D. D.

AU - Protasenya, A. L.

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N2 - A comparative study of the flash-lamp pumped laser performance of standard b-grown Nd:KGW and Nd:KGW grown for propagation along the optical axis N-g is presented. The results show that, in comparison with b-grown crystal, the N-g-grown Nd:KGW is very promising for use at high repetition flash-lamp pumping rates. With the same laser cavity configuration, the N-g-grown Nd:KGW can operate at an average flash-lamp input power of at least 1.4 kW, while the b-cut one ceases lasing at average flash-lamp input power of similar to 0.5 kW. The reason for this is that the thermal lens induced in the N-g-oriented Nd:KGW rod under pump radiation is relatively weak, nearly spherical and positive, whereas the b-grown Nd:KGW rod acts as a quite weak positive lens for radiation with radial polarization, and as a much stronger negative lens for tangentially polarized radiation.

AB - A comparative study of the flash-lamp pumped laser performance of standard b-grown Nd:KGW and Nd:KGW grown for propagation along the optical axis N-g is presented. The results show that, in comparison with b-grown crystal, the N-g-grown Nd:KGW is very promising for use at high repetition flash-lamp pumping rates. With the same laser cavity configuration, the N-g-grown Nd:KGW can operate at an average flash-lamp input power of at least 1.4 kW, while the b-cut one ceases lasing at average flash-lamp input power of similar to 0.5 kW. The reason for this is that the thermal lens induced in the N-g-oriented Nd:KGW rod under pump radiation is relatively weak, nearly spherical and positive, whereas the b-grown Nd:KGW rod acts as a quite weak positive lens for radiation with radial polarization, and as a much stronger negative lens for tangentially polarized radiation.

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