成果報告書詳細
管理番号20160000000766
タイトル*平成27年度中間年報 クリーンデバイス社会実装推進事業 高速・小型・省電力KTN光制御デバイスのレーザー産業分野における市場開拓・普及事業
公開日2016/9/7
報告書年度2015 - 2015
委託先名エヌ・ティ・ティ・アドバンステクノロジ株式会社 国立大学法人埼玉大学 国立大学法人大阪大学
プロジェクト番号P14016
部署名IoT推進部
和文要約
英文要約Title: Clean Device Promotion Project, "Market Development and Popularization of High-Speed, Compact and Energy-saving KTN Optical Control Devices", (FY2015-FY2016) FY2015 Annual Report

1. Creation of Usage Cases
We displayed KTN devices in 5 exhibitions (3 domestic and 2 overseas) and interviewed potential customers in five potential fields (basic science, medical, industry, telecom and automotive, consumer products). Among them, we additionally found 2 applications for laser processing and one application for telecom which will be forwarded to the proof-of-concept stage. The interviews with potential customers revealed that the characteristics of damage threshold and high speed for laser processing, compactness, high speed and high reliability for telecom would be seen as superior to conventional devices. In addition to the exhibitions, we analyzed the market size of five categories and joined the Consortium of Visible Laser Diode Applications in order to create new applications.
2. Standardization Activity
We established the committee on application of the KTN optical switch to multiphoton excitation fluorescence microscope and the committee on application of KTN 2D scanner to OCT. We have started discussions about common specifications in each application. We will proceed to discuss about common specifications with these committees in order to prepare basic guidelines for each of the application fields.
3. Reliability and Safety
The interviews with potential customers suggested that a long-term operation test, temperature cycle test, operation stability against variations in environmental temperature, would be key reliability testing for normal operation. As for the storage conditions, high temperature, low temperature, thermal shock, vibration testing would be important testing. The safety guidelines must be equivalent to the guidelines for lasers used for specific applications. In addition, the committee prepared the provisional guidelines of the KTN 2D scanner for medical application.
4. Proof-of-concept
(1)Multiphoton excitation fluorescence microscope
We designed and prepared two types of KTN optical switches; Pockels cell and Kerr cell. Both optical switches have very low driving voltages compared to conventional optical switches by two orders of magnitude. The driving voltage of the prepared Kerr cell was about 25V with 190V DC bias. This Kerr cell was installed in a multiphoton excitation fluorescence microscope and tested with Chameleon Discovery (Coherent). The Kerr cell was confirmed to be stably operated with 1W laser power at 2 kHz. We plan to test the Kerr cell up to 50MHz with a high-speed driver which was specially designed.
(2) OCT
The KTN 2D scanner with GRIN lens can be used as a rigid endoscope. The prepared KTN 2D scanner with GRIN lens had the expected scanning rage of 1.79 x 1.78 mm at 14.5mm from the tip of the GRIN lens. The improved swept source OCT system for KTN 2D scanner was built. The swept light source operated at 1310 nm and the frequency is 100 kHz. The trigger of the swept source is coincided to the frame trigger of the KTN 2D scanner. The coherence length of this system was 7.0 mm. We will mount the KTN 2D scanner as a rigid endoscope on this OCT system to evaluate the potential of this combination for medical applications.
5. Research presentations, lectures, press releases, etc.
1 oral presentation and 5 exhibitions.
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