Machined InP immersion grating perfectly covering J-band

Takashi Sukegawa; Yukinobu Okura

doi:10.1117/12.2560444

13 December 2020 Machined InP immersion grating perfectly covering J-band

Takashi Sukegawa, Yukinobu Okura

Proceedings Volume 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV; 114511C (2020) https://doi.org/10.1117/12.2560444
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

Canon succeeded in practical application of InP immersion rating for the first time in the world (Sukegawa et al., 2016). We have developed specialized material for an immersion grating in transmission characteristics and obtained a material comparable to Silicon. The InP immersion grating produced by this material and excellent cutting technology is shorter in wavelength and more practical than the initial InP immersion element and can completely cover the range covered by the Silicon immersion grating. In addition to the already proven around 2.2μm (K-band) and around 1.6μm (H-band), an immersion diffraction element having an ideal grating shape can be provided even at around 1.25μm (J-band). Of course, it is possible to produce not only the immersion grating but also the grism. In this paper, we will also show our latest machining optical devices such as micro-mirrors of Integral Field Units having the same structure as a groove of diffraction grating.

Citation Download Citation

Takashi Sukegawa and Yukinobu Okura "Machined InP immersion grating perfectly covering J-band", Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV, 114511C (13 December 2020); https://doi.org/10.1117/12.2560444

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available