Self-mixing interference in a thin-slice solid-state laser with few feedback photons per observation period

  title={Self-mixing interference in a thin-slice solid-state laser with few feedback photons per observation period},
  author={Kenju Otsuka and Seiichi Sudo},
  journal={Physical Review A},
Formation of a peculiar lasing pattern leading to a TEM 00 -like mode accompanied by a nonzero bright outer-ring emission (namely, a modified TEM 00 mode) was observed in a 300-  m-thick LiNdP 4 O 12 (LNP) laser with reflective flat end mirrors that was pumped with a laser diode whose focused spot size was larger than the lasing beam spot size determined by the thermal lens effect. The photon lifetimes of the laser oscillations were found to be greatly shortened to  p = 6.74 ps as compared… 



Modeling of thermal lensing and higher order ring mode oscillation in end-pumped C-W Nd:YAG lasers

The influence of thermal lensing and mode matching on the oscillating mode in the end-pumped Nd:YAG laser is investigated. Thermal lensing was measured by probing the output beam divergence of a

Study of non-contact measurement of the thermal expansion coefficients of materials based on laser feedback interferometry.

The noncooperative and ultrahigh sensitive length measurement approach is presented in this paper based on the Nd:YAG microchip laser feedback interferometry with 1064 nm wavelength, the beam frequency of which is shifted by a pair of acousto-optic modulators and then the heterodyne phase measurement technique is used.

Single‐transverse‐mode LiNdP4O12 slab waveguide laser

Argon‐laser‐pumped single‐transverse‐mode laser operation was obtained with a three‐dimensionally confined LiNdP4O12 slab waveguide laser, in which one endface was cylindrically polished and directly

Self-Mixing Thin-Slice Solid-State Laser Metrology

  • K. Otsuka
  • Physics, Materials Science
  • 2011
This paper reviews the dynamic effect of thin-slice solid-state lasers subjected to frequency-shifted optical feedback, which led to the discovery of the self-mixing modulation effect, and its

Laser‐emission cross sections of MeNdP4O12 (Me=Li, Na, K) crystals

Emission cross sections of a Nd stoichiometric laser crystal LiNdP4O12 at 1.048 μm were measured by a direct absorption method and the conventional spectroscopic method. The largest

Thermal properties of a solid‐state laser crystal LiNdP4O12

The thermal expansion coefficient and the thermal coefficient of refactive index of a stoichiometric laser crystal LiNdP4012 have been measured from room temperature to 250 °C. The thermal

Fluorescence in lithium neodymium ultraphosphate single crystals

Single crystals of lithium neodymium ultraphosphate (probably LiNdP4O12) were grown by the Kyropoulos method from a melt. The crystal belongs to the orthorhombic system with space group Imma (D2h28),

Inspecting and locating foreign body in biological sample by laser confocal feedback technology

A promising method is proposed to inspect and locate foreign bodies in biological samples. It combines advantages of confocal microscopy and optical feedback effect of microchip solid-state laser,