pimiПриборы и методы измеренийDevices and Methods of Measurements2220-95062414-0473BNTU10.21122/2220-9506-2023-14-1-27-37pimi-806Research ArticleСредства измеренийMeasuring instrumentsИмпульсный лазер с диодной накачкой для дальномеров, работающих в широком диапазоне температурDiode-Pumped Laser for Rangefinders Operating over Wide Temperature RangeОреховаВ. Е.OrekhovaV. E.

Адрес для переписки:Орехова В.Е. - ОАО «Пеленг»,ул. Макаёнка, 25, г. Минск 220114, Беларусь e-mail: vikawatutsina@gmail.com

Address for correspondence:Orekhova V.E. – JSC «Peleng»,Makayonka str., 25, г. Minsk 220114, Belarus e-mail: vikawatutsina@gmail.com

vikawatutsina@gmail.comКисельВ. Э.KiselV. E.

НИЦ оптических материалов и технологий

пр-т Независимости, 65, г. Минск 220013

Center for Optical Materials and Technologies

Nezavisimosty Ave., 65, Minsk 220013

ОреховК. А.OrekhovK. A.

ул. Макаёнка, 25, г. Минск 220114

Makayonka str., 25, г. Minsk 220114

ПеленгБеларусьPeleng JSCBelarusБелорусский национальный технический университетБеларусьBelarusian National Technical UniversityBelarus2023070420231412737Copyright © Орехова В.Е., Кисель В.Э., Орехов К.А., 20232023Орехова В.Е., Кисель В.Э., Орехов К.А.Orekhova V.E., Kisel V.E., Orekhov K.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://pimi.bntu.by/jour/article/view/806

Представлен прототип импульсного лазера на кристалле иттрий-алюминиевого граната с ионами Nd3+ (Nd:YAG) с диодной накачкой, излучающего на длине волны 1064 нм, для применения в составе дальномеров авиационного базирования и атмосферных лидаров без применения дорогостоящих компонентов и технологий производства.

Проведён расчёт выходной энергии импульса лазерного излучения в режиме активной модуляции добротности. Получены пространственные характеристики лазерного излучения и зависимость энергии лазерного импульса от энергии импульса накачки при комнатной температуре. Приведены результаты измерений энергии лазерного импульса излучателя с диодной накачкой для частот следования 1; 4; 12,5; 22 Гц в течение 2 мин в температурном диапазоне от -40 до +50 °С. Стабилизация температуры матриц лазерных диодов обеспечивалась применением элемента Пельтье с максимально возможной мощностью охлаждения 30 Вт.

В исследованных диапазонах частот следования лазерных импульсов и температур окружающей среды были достигнуты значения энергии лазерного импульса не менее 80 мДж. Расходимость при комнатной температуре не превышает 1,9 мрад.

A prototype of a pulsed diode-pumped laser based on Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) crystal emitting at 1064 nm is presented for use in airborne rangefinders and atmospheric LIDARs without use of expensive production technologies and components.

Actively Q-Switched laser pulse energy was estimated. Spatial characteristics of laser beam and dependence of pulse energy on the pump pulse energy were obtained at room temperature. Results of diodepumped laser pulse energy measurements are provided within 2 min for pulse repetition rates of 1, 4, 12.5, 22 Hz at ambient temperature range from -40 to +60 °C. Laser diode arrays temperature stabilization was achieved by the use of Peltier module with cooling capacity of 30 W.

Pulse energy values not less than 80 mJ were achieved in the studied ranges of ambient temperature and pulse repetition rate. Laser beam divergence at room temperature does not exceed 1.9 mrad.

 

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The authors declare that there are no conflicts of interest present.