A helium-neon laser with a gain length of 0.2 m is installed in a two-mirror cav-...
We would like to make a helium–neon laser (λ = 632.8nm) that runs on only a single cavity mode. The gain line is about 1.5 GHz wide, so we need to make sure the spacing of the cavity modes is that large. a. What is the length of a cavity that has a free spectral range of 1.5GHz? Should the laser be longer or shorter than this length? Can we expect high power from this laser? b. What is the...
Mirror Laser Discharge 1.0 mm beam Partial mirror Electrodes Power supply Review A helium-neon laser (λ = e33 nm) is built with a glass tube of inside diameter 1。0 mm. as shown in (Figure 1). One mirror is partially transmitting to allow the laser beam out. An electrical discharge in the tube causes it to glow like a neon light. From an optical perspective, the laser beam is a light wave that diffracts out through a 1.0-mm-diameter circular The angle...
A helium-neon (He-Ne) laser has a gain bandwidth (defined as the frequency interval over which the laser gain equals or exceeds the minimum threshold for gain) given by ΔνG=2.5ΔνG=2.5 GHz, centred on λ=633λ=633 nm emission wavelength. a) Determine the maximum length of the He-Ne resonator when only one resonant axial mode can oscillate at any given time. (cm) b) By what length must the resonator be changed in order to tune the frequency of this He-Ne (i.e. with one resonant...
2. A Q-switched laser uses a cavity with a length of 1m and an average mirror reflectivity of r = 0.9. The gain medium is an Nd:YAG crystal, which is pumped by a flashlamp. a) What is the cavity loss time ignoring losses in the gain medium and approximating the refractive index of the cavity as near unity? b) What is the quality factor (Q)? c) Draw the optical configuration in the laser cavity for a quarter wave electro-optical q-switch...
2. A Q-switched laser uses a cavity with a length of 1m and an average mirror reflectivity of r 0.9 The gain medium is an Nd:YAG crystal, which is pumped by a flashlamp. a) What is the cavity loss time ignoring losses in the gain medium and approximating the refractive index of the cavity as near unity? b) What is the quality factor (Q)? c) Draw the optical configuration in the laser cavity for a quarter wave electro-optical q-switch for...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...