TY - JOUR AU - Shishkina, V. AB - OPTICOPHYSICAL MEASUREMENTS METHOD OF REDUCING THE THRESHOLD ENERGY FOR THE RECORDING OF OPTICAL INFORMATION ON A NONSELECTIVE RECORDING MEDIUM N. D. Baikova, Yu. P. Vinogin, G. I. Rukman, B. M. Stepanov, UDC 538.231.6 and V. A. Shishkina In connection with the development of laser technology the creation of nonselective me- dia for recording optical information over a wide range of wavelengths is now assuming first- order importance. The principle of recording information on thin-film nonselective media (evaporating met- al films such as bismuth and chromium, magnetic films such as Permalloy with a banded domain structure, manganese-bismuth films, and others [i]) is based on the thermal action of elec- tromagnetic radiation. The threshold energy density for recording pulsed radiation lasting i msec on film is at least 10 -2 J/cm 2. We remember [2] that the sensitivity of films largely depends on the length of the radiation pulse. For pulses shorter than i ~sec the heating of the film may be regarded as adiabatic. For longer pulses the spread of heat over the film and in the sub- strate must be taken into account. The sensitivity of the film diminishes accordingly. Thus for a pulse 0.5 msec long the threshold TI - Method of reducing the threshold energy for the recording of optical information on a nonselective recording medium JF - Measurement Techniques DO - 10.1007/BF00822687 DA - 2004-11-30 UR - https://www.deepdyve.com/lp/springer-journals/method-of-reducing-the-threshold-energy-for-the-recording-of-optical-FTkEQ0MECB SP - 545 EP - 547 VL - 19 IS - 4 DP - DeepDyve ER -