Question

. The loop gain of a 0.5 m length laser, GL, is 1.04, and loss factor...

. The loop gain of a 0.5 m length laser, GL, is 1.04, and loss factor is M=0.98. What is the minimum reflectivity of a symmetric (same reflectivity for both mirrors) resonator mirror if the laser gain coefficient is 2*10-3 cm-1?

Homework Answers

Answer #1

As laser has symetric resonator mirror , reflection coefficient or reflectivity of both the mirrors will be same... e.i, R

So reflectivity is calculated as below

reflectivity of both the mirrors will be 100%

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A Nd microchip laser has an index of refraction 1.78 and a cavity length of 3.20...
A Nd microchip laser has an index of refraction 1.78 and a cavity length of 3.20 mm. Mirrors of reflectivity 0.997 and 0.975 are mounted directly on the faces of the chip. The emission line shape of the laser transition can be considered to be Lorentzian, with a line width of 4.80 THz. a) Calculate the frequency spacing between modes of the laser and the frequency width of the modes. b) Calculate the number of modes within the transition line...
A He-Ne laser has the following characteristics: (1) A resonator with 97% and 100% mirror reflectances...
A He-Ne laser has the following characteristics: (1) A resonator with 97% and 100% mirror reflectances and negligible internal losses; (2) a Doppler –broadened atomic transition with Doppler linewidth ΔνD = 1.5 GHz; and (3) a small – signal peak gain coefficient γ0(ν0) = 2.5 x 10-3 cm-1 . While the laser is running, the frequencies of its longitudinal modes drift with time as a result of small thermally induced changes in the length of the resonator. Find the allowable...
An Ar+-ion laser has a 1-m-long resonator with 100% and 98% mirror reflectances. Other loss mechanisms...
An Ar+-ion laser has a 1-m-long resonator with 100% and 98% mirror reflectances. Other loss mechanisms are negligible. The atomic transition has the central wavelength λ0=515 nm, spontaneous emission lifetime tsp=10 ns, and the linewidth Δλ=0.003 nm. Determine the photon lifetime and the threshold population difference.
2. Consider a He-Neon laser characterized by the following parameters: Operating wavelength ?? = 632.8 ????,...
2. Consider a He-Neon laser characterized by the following parameters: Operating wavelength ?? = 632.8 ????, tube length ?? = 30 ????, cavity end-mirror reflectance values ??1 = 0.95 and ??2 = 1.00, linewidth ∆?? = 0.8 ??????, Einstein6 −1 coefficient for the lasing transition ??21 = 8 × 10 ?? and loss coefficient ???? = 0.07 ?? . Calculate (a) the threshold gain ????h and (b) the threshold population inversion ∆????h. (c) If the tube diameter is
1. Find the moment of inertia of a stick of length 4 m and mass 10...
1. Find the moment of inertia of a stick of length 4 m and mass 10 kg that is rotated about an axis that is 30 % from the left end of the stick. Hint do the integration of r^2 dm 2. A 123 kg merry go round with a 5 m radius rotates on a vertical axis. If I push at the edge with a force of 188 N, find the angular acceleration. The moment of inertia of disk...
What is a Capital Asset?, Holding Period, Calculation of Gain or Loss, Net Capital Losses (LO...
What is a Capital Asset?, Holding Period, Calculation of Gain or Loss, Net Capital Losses (LO 8.1, 8.2, 8.3, 8.5) Charu Khanna received a Form 1099-B showing the following stock transactions and basis during 2016: Stock Date Purchased Date Sold Sales Price Cost Basis 4,000 shares Green Co. 06/04/05 08/05/16 $12,000 $3,000 500 shares Gold Co. 02/12/16 09/05/16 54,000 62,000 5,000 shares Blue Co. 02/04/06 10/08/16 18,000 22,000 100 shares Orange Co. 11/15/15 07/12/16 19,000 18,000 None of the stock...
Two waves traveling in opposite directions on a stretched rope interfere to give the standing wave...
Two waves traveling in opposite directions on a stretched rope interfere to give the standing wave described by the following wave function: y(x,t) = 4 sin⁡(2πx) cos⁡(120πt), where, y is in centimetres, x is in meters, and t is in seconds. The rope is two meters long, L = 2 m, and is fixed at both ends. In terms of the oscillation period, T, at which of the following times would all elements on the string have a zero vertical...
1. An oven chimney is made of brick with a heat transmission coefficient 1.1 W/mK 10...
1. An oven chimney is made of brick with a heat transmission coefficient 1.1 W/mK 10 cm thick. Since the shaft exterior radiation beam coefficient is 0.8 and the flue gas temperature is 350°C, the external ambient temperature is 25°C and the outer ambient heat transport coefficient is 20 W/m2K; a) Calculate the shaft exterior temperature. b) In order to reduce the risk of burn injury that may occur in the body, the shaft is asked to be below 55°Cve...
A grey body is one whose absorptivity 1. does not vary with temperature and wavelength of...
A grey body is one whose absorptivity 1. does not vary with temperature and wavelength of the incident ray 2. is equal to its emissivity 3. varies with temperature 4. varies with wavelength of the incident ray A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal 1. potential energy. 2. kinetic energy. 3.temperature. 4. intermolecular forces of attraction. A liquid of density 1000 kg/m3...
ch 6 1: It is generally a good idea to gain an understanding of the "size"...
ch 6 1: It is generally a good idea to gain an understanding of the "size" of units. Consider the objects and calculate the kinetic energy of each one. A ladybug weighing 37.3 mg flies by your head at 3.83 km/h . ×10 J A 7.15 kg bowling ball slides (not rolls) down an alley at 17.5 km/h . J A car weighing 1260 kg moves at a speed of 49.5 km/h. 5: The graph shows the ?-directed force ??...