Opt.-NIR Astronomical
Instrument WS 2022
12/22/2022

Optical Configuration of Sequentially Timed All-optical
Mapping Photography with a Slicing Mirror
Xinyi Qi (1), Takao Saiki (2), Takuya Hosobata (3), Masahiro Takeda (3), Shinya Morita (4), Kosuke
Kushibiki (5), Kentaro Motohara (5,6), Shinobu Ozaki (6), Yutaka Yamagata (3), Keiichi Nakagawa (1,2)(1) Department of Bioengineering, Graduate School of Engineering, The University of Tokyo(2) Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo(3) RIKEN Center for Advanced Photonics, RIKEN(4) School of Engineering, Tokyo Denki University(5) Department of Astronomy, Graduate School of Science, The University of Tokyo(6) Advanced Technology Center, National Astronomical Observatory of Japan

Background – Applications of Spectral Imaging with Slicing Mirror
In astronomical observations

E. Prieto & S.Vivès, New Astronomy Reviews (2006)

2

In biological studies

K. Nakagawa et al., Nat. Photonics (2014)

ThemeOptical Configuration of Sequentially Timed All-optical
Mapping Photography with a Slicing Mirror
Contents:
1. Spectral imaging with the slicing mirror based on a 4f optical system toperform STAMP imaging
2. The actual optical setting of spectral imaging in STAMP with the slicing mirror
3. The optical configuration combining STAMP and microscope is being
constructed3

Use of the Slicing Mirror in Spectral Imaging
Concept
Top view

Side view

The slicing mirrors spatially separates overlapped
images at the Fourier plane in the 4f system
M. Tamamitsu et al., Opt. Engineering (2015)4

Trade-off of the Slicing Mirror in the proposed method
Concept

Spectral Performance

Small facets on the slicing mirror = more frames =worse spatial resolution
M. Tamamitsu et al., Opt. Engineering (2015)

5ThemeOptical Configuration of Sequentially Timed All-optical
Mapping Photography with a Slicing Mirror
Contents:
1. Spectral imaging with the slicing mirror based on a 4f optical system toperform STAMP imaging
2. The actual optical setting of spectral imaging in STAMP with the slicing mirror
3. The optical configuration combining STAMP and microscope is being
constructed

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STAMP – Optical Setup

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The system for imaging dynamics of shock wave in water:
Temporal mapping device

Half wave plate

Imaging pulse
Pump pulse

Spatial mapping device

Frame interval: 1.5 ns
Exposure time: 24 ps
Number of frame: 9

STAMP – Imaging result for shock wave

8Shock wave travelling upwards

Speed of the shock wave

Successfully visualized the propagation of the shock
wave, and measured the speed as 1.7 km/s

ThemeOptical Configuration of Sequentially Timed All-opticalMapping Photography with a Slicing Mirror
Contents:
1. Spectral imaging with the slicing mirror based on a 4f optical system toperform STAMP imaging
2. The actual optical setting of spectral imaging in STAMP with the slicing mirror
3. The optical configuration combining STAMP and microscope is being
constructed

9

STAMP with microscope – Optical Setup

Excitation pulse
Imaging pulse

Excitation Pulse: 400 nm (femtoseconds)
Imaging Pulse: 800nm (picoseconds)
Number of frame: 910

Current Progress: Implementation of STAMP with microscope
Imaging pulse

Excitation pulse
Imaging pulse

11Current Progress: Implementation of STAMP with microscope
Excitation pulse

Excitation pulse
Imaging pulse

12Summary

Optical Configuration of Sequentially Timed All-optical Mapping
Photography with a Slicing Mirror• STAMP is a method that captures ultrafast phenomena with femtosecondand nanosecond timescale• Spectral imaging with the slicing mirror based on a 4f optical system isconstructed to perform STAMP imaging• The width of the facets in slicing mirror contributes to the trade-off
between the number of frames and spatial resolution• The optical configuration combining STAMP and microscope is being
constructed.

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