Laser Scanning Method for Time-Resolved Measurements of Wavefront Distortion Introduced by Active Elements in High-Power Laser Amplifiers

Standard

Laser Scanning Method for Time-Resolved Measurements of Wavefront Distortion Introduced by Active Elements in High-Power Laser Amplifiers. / Kuptsova, Alyona O.; Kuptsov, Gleb V.; Petrov, Vladimir A. et al.

In: Photonics, Vol. 11, No. 8, 748, 08.2024.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{6a3186969a4847f397ef81878438bdcc,

title = "Laser Scanning Method for Time-Resolved Measurements of Wavefront Distortion Introduced by Active Elements in High-Power Laser Amplifiers",

abstract = "A novel method was proposed for the experimental investigation of wavefront distortion introduced to amplified radiation by pumped active elements in high-power laser amplifiers. The method is based on the simultaneous measurement of temperature distribution and the distribution of population density of the excited laser level in active elements. The underlying theory of the technique was presented; various factors affecting the accuracy of wavefront distortion determination were analyzed. The method was tested to study the wavefront distortion and the depolarization of radiation introduced by the Yb:YAG active element of a cryogenically cooled laser amplifier with high-power diode pumping. The focal length of the thermal lens was 0.40 ± 0.03 and 0.47 ± 0.05 m for the horizontal and vertical planes, respectively. The focal length of the electron lens was two orders of magnitude larger. The maximum value of losses induced by depolarization was 8.5%.",

keywords = "high-power amplifiers, laser scanning method, laser thermometry, thermo-optic effects, wavefront distortion",

author = "Kuptsova, {Alyona O.} and Kuptsov, {Gleb V.} and Petrov, {Vladimir A.} and Atuchin, {Victor V.} and Petrov, {Victor V.}",

note = "The reported study was funded by the Russian Science Foundation, grant No. 23-22-00238.",

year = "2024",

month = aug,

doi = "10.3390/photonics11080748",

language = "English",

volume = "11",

journal = "Photonics",

issn = "2304-6732",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "8",

}

RIS

TY - JOUR

T1 - Laser Scanning Method for Time-Resolved Measurements of Wavefront Distortion Introduced by Active Elements in High-Power Laser Amplifiers

AU - Kuptsova, Alyona O.

AU - Kuptsov, Gleb V.

AU - Petrov, Vladimir A.

AU - Atuchin, Victor V.

AU - Petrov, Victor V.

N1 - The reported study was funded by the Russian Science Foundation, grant No. 23-22-00238.

PY - 2024/8

Y1 - 2024/8

N2 - A novel method was proposed for the experimental investigation of wavefront distortion introduced to amplified radiation by pumped active elements in high-power laser amplifiers. The method is based on the simultaneous measurement of temperature distribution and the distribution of population density of the excited laser level in active elements. The underlying theory of the technique was presented; various factors affecting the accuracy of wavefront distortion determination were analyzed. The method was tested to study the wavefront distortion and the depolarization of radiation introduced by the Yb:YAG active element of a cryogenically cooled laser amplifier with high-power diode pumping. The focal length of the thermal lens was 0.40 ± 0.03 and 0.47 ± 0.05 m for the horizontal and vertical planes, respectively. The focal length of the electron lens was two orders of magnitude larger. The maximum value of losses induced by depolarization was 8.5%.

AB - A novel method was proposed for the experimental investigation of wavefront distortion introduced to amplified radiation by pumped active elements in high-power laser amplifiers. The method is based on the simultaneous measurement of temperature distribution and the distribution of population density of the excited laser level in active elements. The underlying theory of the technique was presented; various factors affecting the accuracy of wavefront distortion determination were analyzed. The method was tested to study the wavefront distortion and the depolarization of radiation introduced by the Yb:YAG active element of a cryogenically cooled laser amplifier with high-power diode pumping. The focal length of the thermal lens was 0.40 ± 0.03 and 0.47 ± 0.05 m for the horizontal and vertical planes, respectively. The focal length of the electron lens was two orders of magnitude larger. The maximum value of losses induced by depolarization was 8.5%.

KW - high-power amplifiers

KW - laser scanning method

KW - laser thermometry

KW - thermo-optic effects

KW - wavefront distortion

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85202533369&origin=inward&txGid=a04e429ee8d6c5bdefc90ec416a5f644

UR - https://www.mendeley.com/catalogue/ea8c2664-91c3-3f90-8ae4-8f08239f5ba0/

U2 - 10.3390/photonics11080748

DO - 10.3390/photonics11080748

M3 - Article

VL - 11

JO - Photonics

JF - Photonics

SN - 2304-6732

IS - 8

M1 - 748

ER -

ID: 60696329