Luminary Ultrafast TEM / Dynamic TEM

Luminary Ultrafast TEM / Dynamic TEM
The Luminary time-resolved transmission electron microscope is designed for pump-probe experiments using one or more lasers to study transient phenomena in specimens.
Users can directly excite the sample with a laser and generate photoelectron probe pulses with a UV laser to probe the sample in imaging, diffraction, spectroscopy, or spectral imaging modes. The Luminary time-resolved TEM is an extremely versatile platform that allows users to choose their optical configurations with a multitude of laser types to conduct ps stroboscopy, ns stroboscopy, ns single shot (SS), and/or ns movie mode (MM) measurements, as well as conventional thermionic mode, in a single instrument.
The Luminary time-resolved TEM is based on a 200kV TEM JEM-2100Plus and is modified to introduce laser beams directed toward the cathode (electron source) and the sample, including laser optical systems as standard and the laser(s) as options.

Features

  • Probe laser port for photocathode:
    provides an optical path to generate photoelectron probe pulses
  • Pump laser port for specimen:
    provides an optical path to directly excite the specimen using a laser
  • Optical delivery system:
    provides a column-mounted, enclosed optical path for probe and pump lasers
  • Laser workbench:
    can house various types of laser systems
  • Laser alignment and diagnostic tools:
    allows the user to precisely align the laser beams in real time
  • Laser alignment and diagnostic tools:
    allows the user to precisely align the laser beams in real time
  • Data acquision automation software:
    automates a time series of TEM data acquision
  • C0 lens:
    can enhance the signal intensity

Specifications

Configurations and Performances for Various Operating Modes

Stroboscopy Single shot
Mode ps stroboscopy ns stroboscopy single shot DTEM movie mode DTEM
Cathode(s) LaB6 guard ring
Ta disk 		LaB6 (truncated tip)
LaB6 guard ring
Ta disk 		Ta disk Ta disk
Spectrometer Recommended Customers select Incompatible Incompatible
Bench * 1,200 x 2,400 mm
optical table 		Optical teble is not
always necessary 		Optical teble is not
always necessary 		1,200 x 2,400 mm
optical table
Probe laser *
pulse energy
pulse width
wavelength 		100 nJ
300 fs or less
257 nm 		100 μJ
5 ns or less
266 nm 		10 mJ
10 ns or less
266 nm 		10 mJ
9 × 20 ns
266 nm
Pump laser *
pulse energy
pulse with
wavelength		 10 μJ
300 fs or less
515 nm 		10 μJ
5 ns or less
532 nm 		1 mJ
10 ns or less
532 nm 		1 mJ
10 ns or less
532 nm
Repetition rate * approx. 1 MHz approx. 1 kHz SS (10 Hz) SS (10 Hz)
Emission 100 e-/pulse or less 10 e-/pulse or less approx. 108 e-/pulse approx. 109 e-/pulse
Energy spread 1.5 eV or less 1.5 eV or less 100 eV or less 100 eV or less
Temporal width 1.2 ps or less 10 ns or less 20 ns or less 20 ns or less
Spatial resolution 1 nm or less 1 nm or less approx. 10 nm approx. 10 nm
Delay
Range
Presision
Optical jitter 		Linear stage
-666 ps to + 2000 ps
± 0.017 ps 		Delay generator
-1 μs to + 1 ms
± 0.05 ns
± 5 ns or less 		Delay generator
-∞ to + ∞
± 0.05 ns
± 5 ns or less 		Digital sequencer
-100 μs to 100 μs
approx. ± 1 ns
± 5 ns or less
Cathode lifetime * approx. 6 months
Ta disk:12 months or
more (as option) 		approx. 6 months
Ta disk:12 months or
more (as option) 		12 months or more 12 months or more
* typical values

Standard room layout for JEM-2100Plus based Luminary

For ns stroboscopy and single shot DTEM, optical table (OT) is not always necessary depending on the laser configuration.
Standard room layout for JEM-2100Plus based Luminary
AC: Air Compressor
CU: Card Unit
HT: High Tension Tank
OT: Optical Table
PS: Power Supply
RP: Oil Rotary Pump

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