• Current Optics and Photonics
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• 제4권2호
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• pp.127-133
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• 2020

We successfully constructed a passively Q-switched Yb:YAG laser ignitor pumped by a diode laser with low power and long pulse width. To the best of our knowledge, this is the first study to achieve a quasi-MW output power from an optimized Q-switch Yb:YAG laser ignitor by using a pumping diode laser module emitting at under a power of 23 W. The output pulse energy of our optimized laser is 0.98 mJ enclosed in a 1.06 ns pulse width, corresponding to a peak power of 0.92 MW.

• 대한화학회지
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• 제34권3호
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• pp.280-287
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• 1990

란탄나이드 3가 [Sm(Ⅲ), Tb(Ⅲ), and Yb(Ⅲ)]와 유기리간드들의 착물을 비수용매 속에서 전기화학적인 DC 및 DP 폴라로그래피 그리고 CV방법으로 조사하였다. 란탄나이드 3가 착물들은 Ag/AgCl 전극에서 이들 환원 peak는$ E_{pc}$ = -0.16 V, -0.35 V, -0.14 V와 그리고 -0.03 V의 비가역적인 일전자환원 과정이었고, 무거운 란탄나이드의 거동은 원자번호가 증가함에 따라서 안정도상수는 Sm > Tb > Ho > Yb순서로 감소하였다

• 한국광학회:학술대회논문집
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• 한국광학회 2001년도 하계학술발표회
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• pp.246-247
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• 2001

Undoped YCa$_4$O(BO$_3$)$_3$ (sp. gr. Cm) single crystals as well as singly or co-doped with Yb, Er and Ce were grown using Czochralski technique. With the aid of x-ray analysis, crystallographic data of Ce, Er, Yb:YCA$_4$O(BO$_3$) crystals were found.

• Current Optics and Photonics
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• 제7권1호
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• pp.90-96
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• 2023

We numerically solve the nonlinear Schrödinger equation for pulse propagation in a passively mode-locked Yb:KGW laser. The soliton-like pulse formation as a result of balanced negative group-delay dispersion (GDD) and nonlinear self-phase modulation is analyzed. The cavity design and optical parameters of a previously reported high-power Yb:KGW laser were adopted to compare the simulation results with experimental results. The pulse duration and energy obtained by varying the small-signal gain or GDD reproduce the overall tendency observed in the experiments, demonstrating the reliability and accuracy of the model simulation and the optical parameters.

• Current Optics and Photonics
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• 제7권6호
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• pp.732-737
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• 2023

A high-power Yb-doped femtosecond (fs) fiber laser at a repetition rate of 1.83 GHz is reported. By employing a 5-stage repetition rate multiplier, the repetition rate of the mode-locked master oscillator was multiplied from 57.1 MHz to 1.83 GHz. The ultrashort pulse output at 1.83 GHz was amplified in a two-stage Yb-doped fiber amplifier, leading to >100 W of fs laser output with a pulse duration of 290 fs. The theoretical pulse width along the fiber was simulated, showing that it was in good agreement with experimental results. Further improvement in power scaling is discussed.

• 한국결정학회:학술대회논문집
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• 한국결정학회 2000년도 정기총회 및 구정회교수 추모 춘계학술연구발표회
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• pp.34-34
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• 2000

• 한국재료학회:학술대회논문집
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• 한국재료학회 2003년도 춘계학술발표강연 및 논문개요집
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• pp.215-215
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• 2003

• 한국세라믹학회:학술대회논문집
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• 한국세라믹학회 2003년도 춘계총회 및 연구발표회 초록집
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• pp.66.1-66
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• 2003

• 한국광학회:학술대회논문집
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• 한국광학회 2009년도 창립 20주년기념 특별학술발표회
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• pp.312-313
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• 2009

• 한국광학회:학술대회논문집
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• 한국광학회 2007년도 하계학술발표회 논문집
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• pp.117-118
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• 2007