Characteristics of Laser Diode Bar and Stack with Jet-Type, Water-Cooled Heatsink
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概要
- 論文の詳細を見る
Our group has developed a funryu (“fountain flow” in Japanese) heatsink structure for a 1 cm laser diode (LD) bar. The funryu heatsink is only 1.1 mm in thickness and is designed in stackable form. With the help of a good indium soldering technique and detailed thermal analysis, this device achieved a thermal resistance of only 0.25°C/W, defined by the temperature increase per unit of heat dissipation. This thermal resistance is one of the lowest ever attained by a laser diode bar. By stacking 30 LD bars equipped with these funryu heatsinks, we achieved a CW output power of 2.3 kW from a $10\,\text{mm}\times 45.8\,\text{mm}$ laser-emitting area within the stacked-LD module. This power intensity corresponds to 502 W/cm2.
- 2004-09-15
著者
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IZAWA Yasukazu
Institute for Laser Technology
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Kan Hirofumi
Central Research Institute Hamamatsu Photonics K. K.
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Miyajima Hirofumi
Central Research Laboratory Hamamatsu Photonics K. K.
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Yamanaka Masanobu
Institute Of Laser Engineering Osaka University
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Furuta Shin-ichi
Central Research Laboratory Hamamatsu Photonics K. K.
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Oishi Satoru
Central Research Laboratory Hamamatsu Photonics K. K.
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Uchiyama Takayuki
Central Research Laboratory Hamamatsu Photonics K. K.
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Nakai Sadao
Institute Of Laser Engineering Faculty Of Engineering Osaka University
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Oishi Satoru
Central Research Laboratory, Hamamatsu Photonics K.K., 5000, Hirakuchi, Hamakita, Shizuoka 434-8601, Japan
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Nakai Sadao
Institute of Laser Engineering, Osaka University, 2-6, Yamada-oka, Suita, Osaka 565-0871, Japan
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Furuta Shin-ichi
Central Research Laboratory, Hamamatsu Photonics K.K., 5000, Hirakuchi, Hamakita, Shizuoka 434-8601, Japan
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Uchiyama Takayuki
Central Research Laboratory, Hamamatsu Photonics K.K., 5000, Hirakuchi, Hamakita, Shizuoka 434-8601, Japan
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Kan Hirofumi
Central Research Laboratory, Hamamatsu Photonics K.K., 5000, Hirakuchi, Hamakita, Shizuoka 434-8601, Japan
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Izawa Yasukazu
Institute of Laser Engineering, Osaka University, 2-6, Yamada-oka, Suita, Osaka 565-0871, Japan
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Miyajima Hirofumi
Central Research Laboratory, Hamamatsu Photonics K.K., 5000, Hirakuchi, Hamakita, Shizuoka 434-8601, Japan
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