H01J37/228

Additive manufacturing device utilizing EB-laser composite scan

An additive manufacturing device utilizing an electron beam and laser integrated scanning comprises: a vacuum generating chamber (1); a worktable means having a forming region at least provided in the vacuum generating chamber (1); a powder supply means configured to supply a powder to the forming region; an electron-beam emission focusing and scanning means (6) and an laser-beam emission focusing and scanning means (7) configured in such a manner that a scanning range of the electron-beam emission focusing and scanning means (6) and a scanning range of the laser-beam emission focusing and scanning means (7) cover at least a part of the forming region; and a controller configured to control the electron-beam emission focusing and scanning means (6) and the laser-beam emission focusing and scanning means (7) to perform a powder integrated-scanning and forming treatment on the forming region.

INSPECTION DEVICES AND METHODS OF INSPECTING A SAMPLE
20220199359 · 2022-06-23 ·

According to various embodiments, an inspection device may include a chamber, a stage provided within the chamber, an electron emitter, a laser emitter, and a conductive probe. The stage may be configured to hold a sample. The electron emitter may be configured to emit an electron beam towards the stage, to generate a first electrical signal in the sample. The laser emitter may be configured to emit a laser beam towards the stage, to generate a second electrical signal in the sample. The conductive probe may be configured to receive from the conductive structure, at least one of the first electrical signal and the second electrical signal.

Light guide assembly for an electron microscope
11335536 · 2022-05-17 · ·

An embodiment of electron microscope system is described that comprises an electron column pole piece and a light guide assembly operatively coupled together. The light guide assembly also includes one or more detectors, and a mirror with a pressure limiting aperture through which an electron beam from an electron source passes. The mirror is also configured to reflect light, as well as to collect back scattered electrons and secondary electrons.

Charged particle beam device

A charged particle beam device according to the present invention changes a signal amount of emitted charged particles by irradiating the sample with light due to irradiation under a plurality of light irradiation conditions, and determines at least any one of a material of the sample or a shape of the sample according to the changed signal amount.

CHARGED PARTICLE BEAM DEVICE
20220139667 · 2022-05-05 ·

An object of the invention is to provide a charged particle beam device capable of increasing the contrast of an observation image of a sample as much as possible in accordance with light absorption characteristics that change for each optical parameter. The charged particle beam device according to the invention changes an optical parameter such as a polarization plane of light emitted to the sample, and generates the observation image having a contrast corresponding to the changed optical parameter. An optical parameter that maximizes a light absorption coefficient of the sample is specified according to a feature amount of a shape pattern of the sample (refer to FIG. 5).

CHARGED PARTICLE BEAM DEVICE AND SAMPLE OBSERVATION METHOD

A charged particle optical system scans a sample with a pulsed charged particle beam and detects secondary charged particles; and a scan image is formed. Control is carried out so that a deflection signal for deflecting the charged particle beam in a first direction, a first timing for pulsed irradiation, a second timing for pulsed irradiation, and a third timing for detection of the secondary charged particles are synchronized. When the deflection amount of the charged particle beam in the time period of the first timing corresponds to the coordinates of n pixels in the scan image, the same line is scanned m times (m < n) while shifting the first timing with respect to the deflection signal so that a location irradiated with the charged particle beam by each scanning has different pixel coordinates. The pixel values at pixel coordinates where a signal is defective are restored.

Apparatus for wavelength resolved angular resolved cathodoluminescence

Apparatuses for collection of wavelength resolved and angular resolved cathodoluminescence (WRARCL) emitted from a sample exposed to an electron beam (e-beam) or other excitation beams are described. Cathodoluminescence light (CL) may be emitted from a sample at specific angles relative to the excitation beam and analyzed with respect to light-emitting and other optical phenomena. The described embodiments allow collection of WRARCL data more efficiently and with significantly fewer aberrations than existing systems.

Charged particle beam apparatus and sample observation method using the same

A charged particle beam apparatus includes: an electromagnetic wave generation source 16 that generates an electromagnetic wave with which a sample is irradiated; a charged particle optical system that includes a pulsing mechanism 3 and irradiates the sample with a focused charged particle beam; a detector 10 that detects an emitted electron emitted by an interaction between the charged particle beam and the sample; a first irradiation control unit 15 that controls the electromagnetic wave generation source and irradiates the sample with a pulsed electromagnetic wave to generate an excited carrier; a second irradiation control unit 14 that controls the pulsing mechanism and irradiates an electromagnetic wave irradiation region of the sample with a pulsed charged particle beam; and a timing control unit 13. While the emitted electrons are detected by the detector in synchronization with irradiation of the pulsed charged particle beam, the timing control unit controls the first irradiation control unit and the second irradiation control unit, and controls an interval time between the pulsed electromagnetic wave and the pulsed charged particle beam to the electromagnetic wave irradiation region. As a result, based on a transient change in an electron emission amount, it is possible to detect sample information with nano spatial resolution.

CHARGED PARTICLE BEAM DEVICE

An object of the invention is to provide a charged particle beam device capable of specifying an irradiation position of light on a sample when there is no mechanism for forming an image of backscattered electrons. The charged particle beam device according to the invention determines whether an irradiation position of a primary charged particle beam and an irradiation position of light match based on a difference between a first observation image acquired when the sample is irradiated with only the primary charged particle beam and a second observation image acquired when sample is irradiated with the light in addition to the primary charged particle beam. It is determined whether the irradiation position of the primary charged particle beam and the irradiation position of the light match using the first observation image and a measurement result by a light amount measuring device.

Coaxial fiber optical pyrometer with laser sample heater
11169029 · 2021-11-09 · ·

An optical pyrometer having a coaxial light guide delivers laser radiation through optics to heat a localized area on a sample, and simultaneously collects optical radiation from the sample to perform temperature measurement of the heated area. Inner and outer light guides can comprise the core and inner cladding, respectively, of a double-clad fiber (DCF), or can be formed using a combination of optical fibers in one or more coaxial bundles. Coaxial construction and shared optics facilitate alignment of the centers of the heated and observed areas on the sample. The heated area can be on the order of micrometers when using a single-mode optical fiber core as the inner light guide. The system can be configured to heat small samples within a vacuum system of charged-particle beam microscopes such as electron microscopes. A method for using the invention in a microscope is also provided.