optics

Understand depth of field and depth of focus in optical microscopy—how NA, wavelength, and magnification control sharpness and focus tolerance. The post Depth of Field vs Depth of Focus in Microscopy first appeared on .

In a situation like this, I understood that the focal length is half of that of the original lens. However, I don't know whether its image is inverted or not. In this situation, will the image be inverted?

Optical lens maker Genius Electronic Optical (GSEO) reported consolidated revenue of NT$2.72 billion (≈ US$86 million) for August 2026, up 12.26% from NT$2.42 billion in July and up 0.72%, or about NT$19 million, from NT$2.7 billion a year earlier.

Blue light—short wavelengths of visible light emitted by smartphones, computers, and TVs—impairs the eye’s ability to distinguish fine

As far as I understand, electric field lines are only a way to "visualise" electric field. There is no specific rule for the number of field lines to be drawn for a particular field. If it is so, then how does electric flux represent the "number of field lines passing through a surface"? I have read about the analogy of measuring the "number of particles" that flow through a particular area in a …

I have heard that a minimum frequency (Threshold frequency) is required for photoelectric effect to take place, and photoelectric current is independent of frequency of incident light. That means after threshold frequency is reached, photoelectric current would be observed, and further increase in frequency won't effect the current. However, one of my textbooks show this plot. How does photoelect…

A laser pulse alters the magnetic behavior of electrons in an electron-doped cuprate superconductor, as observed through the study of collective magnetic excitations. Researchers investigated how photo-excitation impacts these materials, focusing on the interplay between light and magnetic properties within the cuprate’s electronic structure.

Scientific Reports, Published online: 06 September 2026; doi:10.1038/s41598-026-70731-y Hybrid plasmonic–photonic multi-Fano resonance refractive index sensor using periodic gold nano-bar assisted microcavity coupling

Heisenberg said extreme magnetism would make nothingness bend light. A dead star just proved he was right.

Electrons, particles that carry a negative electric charge, typically move through materials. At low densities and temperatures, however, the electrical repulsion between them can overpower their tendency to move, prompting them to arrange themselves into ordered patterns known as Wigner crystals. In contrast with ordinary crystals, which consist of atoms arranged in a repeating pattern, […]

Understand infinity-corrected vs finite-conjugate microscope optics—tube lenses, magnification, image quality, compatibility, and how to choose the right system. The post Infinity vs Finite Microscopes: Optics, Design, Choice first appeared on .

As Scharnhorst effect states Casimir plates suppresses some quantum fluctuation modes and this gives a negative complex refraction index extinction part, which makes light to feel "less resistance" from virtual particles bath when going between plates and so it amplifies it's phase velocity to speeds $\gt c$ . This effect is very sensitive to distance $d$ between places, general dependence on it …

New research from the lab of electrical and computer engineering professor Kent Choquette has reported the successful demonstration of a quasi-periodic photonic-crystal surface-emitting laser.

New research from the lab of electrical and computer engineering professor Kent Choquette has reported the successful demonstration of a quasi-periodic photonic-crystal surface-emitting laser.

The frozen stretch then held a light pulse as a sound wave for three nanoseconds, with a control pulse of 0.205 nanojoules enough to lift the readout three standard deviations clear of the noise, and separately the authors calculate that a cryogenically cooled highly nonlinear fibre would need 150 times more pump power to reach the same storage figure of merit.

System integration remains a key hurdle as the AI chip industry pushes for higher power efficiency and faster transmission speeds, drawing intense attention to when short-reach optical communications between racks and chips will enter practical use. Industry players say the maturity of system integration is still the main consideration for commercialization.

Silicon photonics (SiPh) is emerging as a core theme at SEMICON Taiwan 2026, and while the sector is still in an early, fast-growing stage, production-line investments are already under way. As optical makers move into co-packaged optics (CPO), the source and capability of laser equipment are becoming critical to whether they can secure market share.

Zhiyu Chen explored how optical functions can be implemented on photonic chips to overcome limitations of systems that control and measure light, such as those used for fast wireless communication and biomedical imaging. Photonic chips guide and process light, similar to how electronic chips process electrical signals, and Chen’s research focuses on controlling light through disordered media like…